Messed around for a few hours with them. So far I love the Badass with my Strat, but will know if it is a keeper for sure next week when I really get to crank it. The Neo Mistress is a very cool little box. I never tried the original and had no idea what the filter matrix was supposed to do and messing around with it you can get a ton of sounds with just the 2 knobs. The led changes colour along with the sweep, and when you are in FM mode the colour shows where in the sweep you are keeping it.