Well good on you man, I hope you guys do well in the future.
I use a Boss NS-2. Got if mainly for this Crate stack I used before I got my Peavy/B-52 combination. Really only bought it because the Crate would squeal when turned up to 6 and beyond. I like it a lot, it gets rid of those little nuances when you play at a great venue with awesome sound. I haven't noticed any tone reduction when using it, but when it's active you have to turn your master volume up a bit to equal out the small bit of volume loss.
I was recommended the Decimator by ISP for only 30 USD more than my Boss. I didn't know anything about ISP though and since the guitar shop I go to doesn't have a demo for it I didn't buy it. I hear it's a beast though, but gear is such personal preference.