I primarily use comp speakers for my guitar. For clean sounds i prefer the comp speakers (actually my cordless headphones are heaven for clean tones). If you get a Digitech pedal it has a mixer out that you can use for comp speakers...its great. Also marshall echohead gives a nice tone when its on so sometimes i use it just as a tone boost. If you're getting induvidual stomps i suggest a digitech one so that you can use comp speakers. Just make sure that this pedal is at the end of the pedal chain...only add delay or reverb after the pedal.
Ideally i'd like an amp but its more cost effective plus very good for recording using the comp. Until i get a good tube amp or anything decent i'm sticking with comp speakers for the time being.