With the 215's being pretty sensitive, the E7 has a much lower floor noise compared to the iPod, but there is still some hiss with no music playing. What are some good amps that don't/hardly have any hiss?
Considering that then, here's my suggestion from my experience.
I suggest you look into this setup here:
Velodyne VX-11 Sub
Polk Monitor 30 Bookshelf speakers
Denon AVR-1312 Receiver
This is the setup that I use right now and I greatly enjoy it!
Prices fluxuate on some of these products and some of them you can get used (if you choose to do so).
What kind of budget are you looking at here? I assume you want a 2.1 system (instead of a 5.1) so it won't be as expensive or maybe you just don't have room for the other speakers since you said it's a small room?