I figured I would provide my personal experience as well - Also upgrading from a Galaxy Nexus to the Droid Maxx...
1) Size: The size is obviously bigger, but not by much. Easy to handle for a 6ft guy, although I have big hands.
2) Phone Build: VERY solid. I feel like the quality of the device is so much better. I dropped the phone already (1 day in) and nothing happened, so very impressed.
3) Button locations: I Love that the power and volume are on the right side. Considering that I am a lefty, I hold the phone in my right hand, so the thump lines up perfectly with the on/off and volume switch

4) RADIOS/Reception: My god it is night and day! I work in a bunker basically, and I never got cell reception at my desk with my nexus. Now, I get 1-2 bars of 1x, which is great because I can now get texts and calls. At home, I now am consitantly on 4g rather than switching back and forth between 3g and 4g like I was on my galaxy nexus. The Wi-Fi and 4g download speeds have been excellent. I cant tell if its because of the hardware on the phone or the connection, I assume its a bit of both

5) Screen: Its OK. I would not call it stellar. Sucks just as much in the daylight - Lots of glare and not very bright. Inside, it looks great though watching HD movies or reading text.
6) Active Display: The notifications are cool. I think this is something that that is not just a 'gimmick'. It has real value as I can just glance over or pick up my phone to see the key information I was looking for.
7) 'Always Listening': This may be a gimmick, but it has been cool so far. I have used the 'OK google now.. set alarm for 40 minutes" a few times. That one is sweet

8) Battery Life: WAY WAY WAY WAY WAY better. Its stupid how much better. I am currenly running a battery test, so results arent final, but so far so awesome. My galaxy nexus would barely last 6 hours, with hardly any use. On this one I am at 23 hours with 38% remaining. Screen was ON 3hours of that. One of the huge things saving my battery is the receiption. At work - without receiption, phones drain SO quickly, so the fact that this now gets 1-2 bars of 1x makes a huge difference. I am hoping to get 36 hours easy, with tyipcal use. Granted, I am now a "power user" but I use my phone often to check emails from work. I would think that in a 24 hour period I would average 4 hours of 'screen on time' and this is handling that NO problem.
9) Wireless Charging - Works OK - I got an LG charger. People say it heats up the phone so I am a bit sketpical. For me, its more of just a 'trickle' when I am at the computer. Considering the battery life of this thing, I only need to charge up once a day. The galaxy nexus would charge much faster, most likely because of the smaller battery, but I needed to charge multiple times a day.
10) Speed - Way faster than the galaxy nexus. So far it is super smooth. Loads web pages crazy fast. I see no jitters on my end. Impressed to say the least.
11) Camera - EH. Not impressed by it. Takes better photos than the nexus, but not great. Little disappointing. They have some cool features like the 'instant access by shaking' which is nice. Also the quick burst shot is also cool just by holding your finger. But the camera itself doesn't seem to reproduce colors correctly and is grainy in lower light.
Overall impression: 9/10 - Battery. For me, I finally said to myself "Whats the point of having a top of the line phone if I can't use it, or am 'scared' to use it because I don't want to drain the battery. This thing is fast, simple (almost pure Google), has a couple nice features I will actually use and battery life is amazing so far. I was originally holding out for the note 3, but I have no regrets. Simple, intuitive, fast, and long lasting. Would recommend to anyone.