The VX is one killer pedal. Combine all of the virtues of both the V and the X, combined with an FX loop and you get the Farndurk VX.
Both circuits utilize the primary and secondary distortion circuits that are a Farndurk exclusive. Both circuits also feature True Bypass, as well as an FX loop function that allows you to treat the two circuits like two separate effects pedals. Easily place a modualtor between the X and the V by using the auto-switching jacks on the rear.
Crunch, blues, rock, hard rock, whatever... the VX does about anything you toss at it.