On 5/3 I opted for the HTC One. I have had Iphones since the 3GS.... my son started with the original and made me get it. HTC has the upgrade special and gave me $220 for my IPhone 4S. Yes, I know, I could get more on EBay but I haven't done EBay in a long time and did not feel like going that route. I got enough to pay for the upgrade and that is all I care about. My reasons for choosing the One instead of the S4.... I liked the feel of the One, it was a little sturdier feeling to me. I preferred the screen on the One, I have old lady eyes and for some reason the whole thing appeared clearer to me. And again I had my son's influence, just a little. He had tried the S3 and didn't like it and ended up with the HTC One X. The camera seems to work fine as far as I'm concerned but I have a regular camera and I don't take many pictures with my phone. I didn't find the learning curve I expected coming from the IPhone. It was an easy transition. The HTC software transferred all of my contacts, music, etc from my IPhone with no problems. I did not have a lot of music though. I don't listen to music much. My IPhone would not read texts from my car's SYNC service, the HTC does... the S4 probably would have as well but I don't know for sure. Bottom line .... I love the phone and feel I made the right choice for me.