Surprisingly, and I just got my One X yesterday after using an S3 for a while and I much prefer the HTC. It just feels like the more premium phone and after messing around with it, removing sense, it's pretty much the same I think. Music player wise, no stock music player is ever good I find. I got to get one off the store. I make sure you pick up the VLC beta off the store
I think both phones need to catchup to iPhone's music player. Iv heard great things about vlc. Heard it streams from computer without being on the same network.
Neither phone designs truly shine to me, I think Sony is making way better looking xperia phones other than the ion. They both have a different feel, HTC feeling better but smudges and protruding camera doesn't help. Ultimately the battery is far improved on the galaxy. Lasts longer and charges faster. I need that.
But I'll throw on vlc, that's my player of choice on desktop anyway
Ps. I Dont care what benchmarks say but I felt as if the HTC was faster and more responsive. When I press the home button on the galaxy there's always a little lag. When I tap to scroll to the top there's a lag. That sucks. But it truly keeps programs open when multitasking which I like. Instead the HTC always refreshes when you return and thus it will log you out if you're logged in . or if youre typing something and come back to it you essentially have to start again