Cheers dB. Well I'm starting to get the hang of the VTDI and have found a couple of excellent clean settings which are likely to feature as an 'always on'. Not found my drive tone on this just yet, but still early days, although one of the sample drive settings is not too shabby at all. I think it's going to render my SA Aftershock obsolete, although that will probably be worth keeping as a drive multi-fx jack-of-all-dirt but master of none, but the jury's out on whether it's going to trump the Grizzly Bass (although I know you never liked that one!) as a drive pedal.
Interestingly the VTDI has a similar couple of interacting dials similar to the Grizzly: the Character & Drive on the VTDI and Overdrive & Distortion on the Grizzly, and the 'magic' on both pedals is tied up with how these two play off each other.
As a clean pre-amp I think the VTDI wins fairly easily for me with its 3 band vs 2 band EQ on the Grizzly, plus its 'bite' button which adds 'presence' via a upper mids and treble boost plus an HPF to tighten up the sound.
If you've got a custom setting for your VTDI for your drive that you feel nails it for you, please feel free to share!
Apologies to the OP for the slight thread diversion (but at least it's in keeping with the thread title 😁)