I went ahead and bought the valve drive, and I couldn't be happier. Great overdriven tone, as much fuzz as I want, doesn't suck out the bass. What a great pedal!! The vintage and modern modes provide two different flavors of overdriven bliss. The EQ points are well chosen, and it's very useful.
The only downsides:
1) 12v power supply. I'm not much of a pedal board guy, but that could be a deal killer for people who want everything to run off a power block with 9v outlets.
2) It's expensive. If the valve drive was $200, they would be insanely popular among bassists. $300 is a lot for a pedal though. Since I don't have many pedals, I went ahead and splurged, but I could see others balking at the high price.
3) It's a little big, and the amber light under the tube (provides a fake tube glow) is cheesy.
Otherwise, it's fantastic, and it's very well made.
Last edited by BartmanPDX : 06-26-2008 at 11:23 AM.