Thanks all, I just wanted to bring some light to the issue, in case someone else has the same problem in the future. My first one had a stuck pixel as well, which is also very uncommon based on what I've read. For the record, I had two replacement Thunderbolts as well, maybe will be the same with the Rezound. Third time's a charm, right?
There's no other phone on the market I want, the gn has signal and battery life issues, and having my Thunderbolt early on, those issues are a pain to deal with, and I don't want to go through that again. I am very happy with the Rezound signal-wise, very solid signal, better than my tb.
The music issue is bad for only classical music. The other types of music aren't really noticible. It is a problem in the Amazon mp3 as well as stock (with and without beats), tune in radio pro. I think the issue is that classical music is set much quieter. what i mean is normally, say i listen to classical at 50%, for other music, i might only have to be at 20%. It's worth it to note, the hiss is slightly different depending on the app.