[AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin] WizeGuyDezignz:
I was always under the impression that as long as you have a custom recovery installed, an OTA would fail to install even if it was automatically downloaded. I don't believe an OTA can be installed while using a custom recovery. Can someone confirm?

As to moving from the One to the S4, there are a lot of factors involved, and a lot of them being personal to me. So to get it out of the way first, the One is a fantastic device. I will try to keep things short, so in a nutshell my GF and I were on Verizon and get crappy reception where we work (same company). Before I left Verizon, I had a S4 already. When I came to AT&T, I grabbed the One because I always wanted it while I was on Verizon but obviously couldn't get it.

After trying it, it just left me wanting my S4 back. Here is where some of the personal preferences come in, so these won't apply to everyone of course. I simply LOVE the S4 (or recent Samsungs in general) notification LED light. I rely on that thing so much that it's not even funny. I use the app, Light Manager, to set up a different color for everything. I can't tell you how helpful it is for me to quickly glance at my phone and know exactly which type of notification that I have. And I love that Samsung lets the light blink until you attend to the notification. I hate HTC's tiny and dual-color notification LED and how it stops blinking after like 5 or 10 minutes. It's almost impossible to see unless you are looking straight on at the phone, and you can't change colors.

Also, call me crazy or maybe my eyes are just trained this way, but I am very partial towards AMOLED screens. I just prefer the deeper black and the super rich and contrast-y colors. Yes I understand that it's not natural, but I'm not doing photo editing on my phone. It just feels like there is more life to the phone. The One's screen while excellent in its own right, just feels cold and dull to me. Hard to explain, but the phone felt lifeless to me.

You can also call me crazy again, but I prefer Touchwiz over Sense 5. While I love how quick and snappy Sense 5 is, it also feels dull to me. Blinkfeed gives it life, but it's a boring UI in my opinion. I have always hated launchers that just slide side to side and don't have any dimension to them. For that you would tell me to just install Nova or another 3rd party launcher and I would tell you that I hate doing that lol. I have always been against installing 3rd party apps to replace native apps or launchers. I'm just not a fan and I think you should just buy a different phone if you are going to make that heavy of cosmetic and usability changes. I really like the stock Touchwiz launcher and the animations overall in their UI.

Not to mention that some of Touchwiz's "gimmicky" features I actually enjoy and use. And the S4 camera is downright better than the One. By a pretty large margin IMO. Other than Zoe, the One camera was extremely disappointing. And the Boomsound front facing speakers are grossly overrated. While the sound never gets muffled or drowned out, the actual loudness is on par or even less than the S4. I understand that there are mods to make them louder, but meh. I will admit they sounded fuller because of the LR stereo setup, but nothing to buy the phone over.

And my last opinion is the dev scene is just larger than the HTC scene IMO. And Samsung phones are so much easier to root than HTC phones.

This is just all my opinion, but I prefer the S4 over the One by a pretty large margin, for me. With that being said, they are both fantastic phones and can't go wrong if you choose the one that suits you best.

Good luck!