I have pretty complicated rack setup that consists of: Sansamp RBI, DBX 166A, Rane ME30b, Aphex C2 w/ Big Bottom, Behringer Tuner, and a QSC Power amp. My pedal board is pretty small and currently consists of (in order): Micro POG, USA Big Muff, ODB-3, and GEB-7. I don't use the GEB-7 as a main eq but rather as a 120/400 hz boost with the Muff or as a treble killer (leaves me able to keep aggressive settings on the RBI but mellow my tone out when necessary). I'm debating between replacing the Big Muff with a Bass Muff, or picking up a USA or nano BassBalls (really dig this effect but have heard that it doesn't work well with active basses?). I have less than 100 to spend and am having a hard time tracking down either one at a used price. I would otherwise acquire both pedals. How much richer/versatile is the Bass Muff? I play some really funky finger style passages with my band and would love to try chaining the POG with the BassBalls. I'm leaning towards the BassBalls so that I can have a funkier pedal and diversify my board, but if the Bass Muff is worth the switch and my EMGs and Super Ferrites will render the BassBalls useless, I'm all ears.