Here are my thoughts:
Camera: The Z3v camera is high quality and considered to be among the best on any phone with the added bonus of a dedicated camera key. My own experience with the Z3v camera has been stellar. When you want to take a picture there is no lag. The pictures are clear with very natural color, and not overly saturated. Low lighting pics are very very good! The Turbo (as with most flagship phones) can take good pictures if there is great light. If not in perfect lighting it can be hit or miss, and in low lighting not nearly as good. The Turbo also suffers from a very slow shutter speed that can make it difficult to capture anything moving. The consensus among Motorola users has always been that the sensor and hardware is good, but the software and processing isn't. Motorola users continually hope for an update to fix the camera deficiencies, but it seems like it never comes. Not sure if that will be the case with the Turbo, although rumors hoping that that Lollipop will fix it abound. If having a good camera is important to you, the choice is probably going to be the Z3v. If it's less important to you, the Turbo can take good pictures with patient use and will probably meet basic camera needs.
Processor & GPU: The Turbo has the 805 while the Z3v has the 801. Unless you are using your phone for very high end and intensive purposes, the difference wouldn't be noticed in everyday use. You're more apt to notice the perception of a speedier interface by simply controlling animation and transition speeds. I've also seen it argued that the benefit of the newer processor and GPU is really negated by the fact that the Turbo is pushing so many more pixels with the QHD display the Turbo has. The 801 processor combined with the 1080p resolution of the Z3v is just as "future proof" in my opinion, unless as I've said you're doing crazy intensive graphic activities. For the casual user there's no practical difference.
Display: Beauty is in the eye of the beholder, and it also depends whether you have bionic vision to be able to tell the difference. The Turbo has the QHD AMOLED while the Z3v has the 1080p LCD (Sony Triluminous) display. AMOLED is typically more punchy with more contrast making the colors a little over saturated and whites slightly bluish. LCD is typically more natural with not quite as deep blacks and whites more warm. This comes down as a personal choice and is completely subjective to the user. I have had three phones with AMOLED displays and really enjoyed them and thought they were much better than LCD. But after having this Z3v, I am totally sold on the naturalness of it's LCD display. Personal opinion though. The Turbo isn't quite as bright as the Z3v overall, and I've read many user posts that indicate the same sentiment. As far as the resolution, here is where bionic vision comes into play. While it's certainly cool to say you've got more pixels than your friends, the reality is you can't really tell the difference, especially since 99% of apps don't even support it, and it will be years before they do. So in my opinion, the only thing you get besides bragging rights is a need for a better processor and GPU, and a bigger drain on battery.
Battery Life: This is one area that I have been the most pleasantly surprised by with the Z3v. It is rock solid! I am consistently getting 8.5 to 9.5 hours of actual screen on time without using any of the stamina modes, and everything left on except Bluetooth. (I did disable all Verizon apps, and Amazon Suite) Longest single day screentime was 11 hours. I recharge nightly so I haven't really done long term testing, but I did get 42 hours of use and 7 hours of screen time. Keep in mind that I live in an area that LTE reception is poor, averaging between 105-110 dBm. To say that I'm impressed is an understatement. Reading through the Turbo forums, I'm seeing some great battery life here and there, but on the average people are getting less battery life than my Z3v, and they are turning things off as well. As with the camera on the Turbo, many are hoping that the Lollipop update will fix their battery issues. I'm thinking that the QHD display on the Turbo is using a lot of battery, and conversely the 1080 display on the Z3v is using less. I charge each night while sleeping and have never gone less than 40% on my heaviest of days. Works for me.
Form Factor. Many people harp on the Z3v because it is too similar to the Z2. It's a subjective thing, but I happen to like the slab factor of the Z3v. Overall it stands out, looking classy and professional and less toy like or tool like. People also harp on the back glass panel because it's glass. The Z2 had the same glass panel and it was stellar in drop tests. I don't have a case on my Z3v, and I'm not worried at all. I'm good to my phones though. The Turbo with its curved back will lay more comfortably in your hand than the Z3v, but I have no issues holding the Z3v with my smaller hands. You need to play with both phones in person to really know what's right for you. I just like having something different that everyone else too.
Reception: I have read and also heard from several people who switched from the new Moto X and Turbo to the Z3v that the reception is the same if not better on the Z3v. Also in regards to the Turbo, the signal is reduced if you put your finger over the top of the phone where the antenna is now located. I don't have experience with the X or Turbo reception to compare, but the Z3v is much better than my last two Samsung's by long shot, and I have never had any phone that didn't drop a call when I drive into my parking garage until this Z3v. The Z3v is the most stable reception I've had on any device.
Both the Turbo and Z3v are great devices in my opinion. In fact, i was planning to buy the Turbo, but bumped into this Z3v and instantly fell in love. I think the overall user experience would be better on the Z3v, but it depends what is important to you.
The down side to the Z3v is that there are simply more users and therefore more user support on Verizon for the Turbo. But then again at this point it seems like you would need more support given all the issues that are cropping up with the Turbo. The Turbo is a beast but it still needs to be tamed as it seems like it was launched a tad prematurely.
Not that this is a huge indication, but on the Verizon site, customer reviews rate the Z3v a little higher than the Turbo.
Sorry for the long post.... Hope my thoughts were at least somewhat helpful!
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