There's always a big debate on Samsung and Apple user. Some is just crazy ongoing. But pretty much as someone who uses both, yeah I did gave Samsung Galaxy a tried, my sister is also currently using one herself, a guy friend bought it for her, free of charge.
I can say that my debate on choosing the Iphone was pretty much on the looks. It's just that simple and straight to the point for me. Really hard to debate on that since you can't really make me like a Samsung looks over Iphone. For some reason, I just likes how my picture comes out on the Iphone vs the Samsung even if the Samsung camera is said to be better. Pretty much, don't have high hope for the Iphone, from what I see, many Iphone user just likes its looks. As far as the handicap issue with ITunes and so forth, I'm sure you're aware of it all.
With that said, hope you'll enjoy the Iphone dude.
Maybe you can help me in deciding if I should get the Iphone 6 or the plus.