I find the OD's of the V3 series are similar but each has a character of its own.
Of the older Visual Sound pedals, the Route 808 is the OD circuit in their dual pedals. By the V2 series it evolved from pretty much a straight up TS clone to having more gain and more boost on tap and a bass boost.
The V3 series Jeckyl and Hyde distortion side has 2 voices - the original found in previous versions and a more open, less compressed voicing. The distortion is based on a Marshall Shredmaster. The new OD side is based on the Open Road according to the description on their website, which describes both circuits as Amp-like. The Open Road is a very warm, but without the drastic mid bump of a TS style design and sounds very much like the OD of a cranked amp. Previous versions had the Route 808 as the OD.
The V3 Route 66 OD is based on their Garagetone Drivetrain, originally designed for Reverend's own series of pedals. Older versions also used the Route 808.
The V3 VSXO, I'm not too sure on. It looks like the left side is the Same circuit as the Jeckyl and Hyde V3, the right side is something else. I'm guessing it's based on their Custom Shop Overdrive, a rare limited run circuit that was hand built at their Nashville headquarters .
In the Visual Sound Garagetone series, along with the Drivetrain there is also the Chainsaw Distortion, which in spite of its name is actually quite usable for styles other than metal.
And if fuzz is of interest, keep an eye out for their Angry Fuzz. It wasn't a big seller so it was out if production after about 2 years. There aren't as many out there compared to other pedals by them. It's got a knob labelled as Anger that lets you dal in/out an upper octave overtone.