I am enjoying my Ibanez Bass Tubescreamer. It is pretty touch sensitive. I've not really put in enough time with it to make any strong claims about it yet, but it seems to retain the low end pretty well. It also changes character drastically depending on your bass or strings. I have a Jaguar with DiMarzio Model J's and stainless strings and it was able to push the pedal from low overdrive into near fuzz. I recently tried some flats on that bass and the pedal sounds very tame by comparison. I also have a P-bass with flats and that one sounded about the same as the Jag, but there was a bit more high end presence (probably due to the SD 1/4 pound pickup it carries). Good luck. Maybe I can get a recording tomorrow.