DigiTech RP70 Multi Effects Pedal by ScarredByDesign
Sound quality: Depends what preset/sounds your using, but overall you can make some VERY cool guitar sounds.
Ease of use: It took me awhile to fully get the hang of this, but that was probably because I was a noob at the time.
Features: SO MANY. So many different amp models, effects, delays/reverbs, and everything, so awesome!
Bang for buck: 10, definitly, This thing is cheap as and you can make some very awesome sounds on it, I love it!