I own the Mosfet version of the Bassdrive, and borrowed and played a Hemotoma for about a month. The one thing the Bassdrive does that the Hemotoma doesn't seem to do too well is a very mild OD, using the "CleanComp" setting on the Bassdrive with low drive settings gives a touch-sensitive mild breakup.
The owner of the Hematoma seemed to sum up my experience with it: you get your bass tone in the middle, surrounded by a cloud of distortion, and at higher setting, approaching fuzz. Lots of volume boost available with the Hematoma.
I personally switched to a Sparkle Drive for light OD, don't really use distortion, and use a TAFM, Red Ripper, and Hawk for various fuzz tones. Of those the TAFM rules and is the most versatile as well.
So I guess I would vote like this:
For distortion and impact: Hematoma
For touch-sensitive overdrive that cleans up w/ volume: Fulltone Bassdrive
For heaviness and fuzz from mild to freaky and even a bit synthy: TAFM
Fender Jazz Bass Club #742; Source Audio Sorcerers #70; Maryland/Virginia/DC Bassists Club #40; PhilZone #21; 3Leaf Audio #66; John Paul Jones Fan Club #7; Pedal Breeders #6
Last edited by HolmeBass : 09-20-2013 at 12:49 PM.