Should I get another iPhone?

I'm eligible for an upgrade for a new cell phone. Right now, I can't decide if I should get the same brand I currently have or try something new.

I currently have an iPhone 4s. I have really enjoyed the phone so that I don't have to juggle an iPod and cell phone. I use iTunes a lot (I have bought over 500 songs. When I add the songs I have on my computers library, I have over 3, 000 songs).

I don't text or call people a lot on my phone.It's mainly for internet, email, and music.

I was considering another iPhone, but I wanted other people's opinion. I would love to have the same phone but with a bigger memory since a 32 GB lasted me only a year (I'm currently on a replacement, but the memory is going down again).

Any opinions on phones?

The iPhone has a slower processor than an Android phone, and the HTC One has a better sound system, however, if you are only using it for internet and email yours is ok.