software

im thinking to buy boss cs-3 ,but im seeing all the people using alesis rack (i dont remember its number).i can easaly get the cs-3 because here s a boss dealer but the other is too hard to get,is there a big diffrence between them?

try the more affordable MXR Supercomp

I've got a CS-3, and while the effect sounds pretty good, it introduces an awful lot of hiss into the signal. I'd check out a Barber Tone Press or an Alesis Punch Factory.

If you want something simple try and look at the DynaComp from MXR is pretty cool and small but with big tone...
JJ

I'd advise against the CS-3. It aint too nice to be frank.
Barber Tone Press is great. The Keeley Compressor is fantastic and the Danelectro Surf N Turf is a great budget buy.

There's nothing special about the alesis rack units, they're an average quality low end comp. I would stick with a pedal for your guitar rig. if you really want a rack compressor, the best one, for you money would be an RNC, made by FMR audio.

ok thats good ,what you think about the compressors in the multy effects,i had a digitech RP300 and i didnt like the compressor in it, what about the other multy effects?