Ok, First and foremost...I can't post pictures of the phones, Because I can lose my job if i do. People on here know im credible and you can also browse my past posts on other devices. If you need pictures to believe me, Then move on..
Second, In the last 4 Months i have owned Droid Turbo, IPhone 6 Plus, Galaxy Note 4 and Nexus 6. (Played with HTC One M9 Demo)
Build Quality/Feel in Hand:
I will say this right now, I was concerned that with glass and metal this device would be slippery or uncomfortable to hold . Boy, I was wrong! The Galaxy S6 feels GREAT in the hand and for some reason, The phone feels small. Even though it's the same screen size as the 5, It feels like they did a great job in perfecting the size and shape. This phone EASILY is the best looking phone Android has seen IMO (I'm a Motorola/HTC guy too). People talk about how HTC has made such a iconic looking phone and what not and don't get me wrong, It's a beautiful phone, But the Speakers add to much height, The htc logo chin is ugly and the phone is simply not easy to hold/use in hand. Samsung has finally listened to us!
To add to the Build Quality, My Co worker and i did some drop tests. We dropped it from our ear, pocket & we dragged it on multiple surfaces. The phone showed NO signs of damage. There wasn't even a scratch! So im happy to see that the glass can hold it owns.
Performance
This is hands down the most important part of a phone to me. I want something that's Smooth, Fluid, Stable and still look good animation wise in doing it. This is the reason why i don't like Samsung phones, Because i simply dislike TW and every year it gets worse and worse. Don't get me wrong, I abuse Nova Launcher and i also like to Unlock/root/flash and what not, But i want to give my opinions of the S6 out of the box, Because most consumers don't do any of that.
I am happy to say that this phone is UNBELIEVABLY smooth. Samsung didn't do anything Major to TW, But it's clear that they did something in the background of TW, Because its like Butter to me. The animations do however make things seem like it could be even faster, but of course that can be changed under Developer options. So for those who don't like TW or who feel the Samsung can't make a smooth phone, The GS6 will change your mind! I also want to point out that when we receive the demos, We have to log into a special google account that VZW gives us and once we do that all the apps you damn customers dl on them when you come in restore on the device, So there was another 40 or more apps installed on stop of the 40+ that were on there. I'll cover more on the camera later, But i do want to say that the double tap home button feature to launch the camera is EXTREMELY FAST! BEST IDEA EVER! I prefer it over motos twist your wrist option and LGS back down button option.
Battery
I mentioned earlier that when we get demo devices in there's a lot of stuff that has to go on the device and set up before we can have it ready for launch. This includes downloading demo loops and installing them, setting up 1 gmail and 1 email, restoring a ton of apps and the biggest letting 12 employees play with it, try out features and learn them. From 10am to about 9pm, The phone started at 84% and by the end of the night the phone was at 24%. We were testing out the camera, Trying QHD videos to see how good the screen is, We were testing out the speaker and comparing it to the M9 and basic stuff like playing with it and just seeing how the phone operates. I believe the screen on time was around 5 hours. I actually took a screenshot and was going to send it to myself, But i forgot so i can't provide that just yet. I'm not going to go into anymore detail after just one day, But i expect the S6 to have GOOD battery life. I don't expect it to match the GS4, Turbo or G3, but it blew away the M9, Nexus 6 and S5.
Camera
My co worker is a photographer and really knows his stuff, He is writing out a review and i am going to post it when he finishes it, Because im a general picture taker and it's not fair to you guys if i give you my thoughts when to be honest, the camera is not the most important feature for me and i would never turn away a phone if the camera wasn't best of the best. Just give me good pictures, good low light photos, Don't lag when i want to take a picture (Here's looking at you Turbo!) & don't give me a clunky UI. So, Comparing the devices i have used, I would say that the S6 is better than the IPhone 6 plus, Htc One M9, Turbo, N6 & G3. I would say it's on par with the GN4 and that's probably, Because its close to the same camera accept for a lower f stop.
If you have any questions, Just ask. I am going to stop here for now, But i will add to this later.
(I was set on the M9, But here are 3 quick things that i noticed...The Battery is AWFUL, The Camera is worst in it's class and the UI features and dumb (Except for Blinkfeed and smoothness). Such a let down!