The review of the Aphex 204 in the new BassPlayer again has me thinking about exciter/enhancers. I've heard nice things about both the Aphex and BBE devices. I realize these effects are subtle and somewhat similar, but has anyone A/B'd the two? Who uses one or the other? Ok, I don't know that I actually *need* one, but the quest for tone never ends and I have this hole in my rack, y'know?