I was using the Reason 3.0 Mastering suite last night and I must tell you guys that it is amazing!! I don't know if you really need a hardware compressor. I know Reason can't do audio but you can always export a file from a program like Cubase as an audio file and then load it into the Reason sampler and then use the compressor (or M-class mastering suite). Also the software reverbs are awesome. How do you guys compare software with hardware stuff?