I'm gonna absolutely buy a 64 GB gold S6 Edge. Went into an AT&T store to check out the demo black and white models and they are quality. I imagine the gold or the green ones should be absolutely stunning.
I've done some extensive research and put a lot of thought into the S6 purchase I'm going to make sometime soon.
Here are my thoughts on the pros and cons:
1. No micro SD storage - When I got my current S4 2 yrs ago I was hearing others having all sort of problems with their SD cards losing the data, having to be reformatted, corrupted by the phone. Most of them were using like Kingston or Sandisk cards. So I got a 64GB official OEM Samsung card thinking if it was same brand to brand it would be alright. Wrong. It lasted me and worked well for most of the nearly 2 yrs I've had it, til recently it finally corrupted and I lost my data on it. Not a big deal since I had everything backed up, but still annoying that it happened. So, my opinion on removable storage is that it is shit and can't be trusted. I don't care if its Samsung, HTC, Apple, I don't care. On board storage is quickest and reliable, albeit more expensive. I'll prolly never want or care for removable storage ever again.
2. Removable Battery - This one I actually kinda care about since I do have the extra battery charging station and a second battery for my S4 and always have a freshly charged battery ready to go. I've had to use it several times but only mostly used it as a emergency backup when I was traveling and didn't want to be a wall hugger or if I played a few games of Clash of Clans that is really battery draining. One thing about my S4 is the lack of quality feel to it that I've missed since the iPhone 4 days, front and back glass with aluminum frame. In order to achieve a solid quality feel, a phone just cannot have a removable backplate. So its a tradeoff I'm willing to trade in order to have that premium feel on my phone again.
As radvas said above, the bloatware and locked bootloader that denies the ability to load custom roms are good reasons to be pissed about the S6. I'm hoping theres a way to buy the phone straight up from Samsung so it doesn't have the carrier specific bloatware and comes sim unlocked. I've heard the Tmobile sold version will have unlocked bootloader, and a root exploit has already been confirmed for it by Chainfire and it will work on AT&T network. So that's a workaround and good news. If buying from AT&T even if buying off contract you will still get a locked bootloader, because AT&T are Sons of Bitches they like to fuck with people. If there ever is a Google Play Edition S6 and S6 Edge that would be perfect, unfortunately there are strong rumors Google is discontinuing its Google Play Edition phones, like all of them.
I may have to wait a little bit to see how the rooting development goes, my S4 is rooted and I have free wifi tethering off my AT&T 4GLTE network, and I do use it a lot so its very important to me. If you don't care about these things and just wanna try something different from years of using boring iPhones, the S6 or edge is absolutely the phone to get. There has never, and I mean never been a premium feeling Android phone that rivals and exceeds iphone quality, maybe the HTC One came close, the M8 looks just ugly.
