The VX is awesome, probably my favorite module, although every time I say that I find myself playing with another one and going "no, this one is my favorite!". VX1 is sweet, chimey, and if you bump the gain, it has that gritty, edgy sound without losing its clarity or that essential Vox midrange thing. Awesome. VX2 is my favorite of all the MOD50 lead tones, I think (I haven't played a couple of the real high gain modules). It's got that cascading gain thing going, where the harmonics are leaping off the fretboard, it's crunchy and smooth all at the same time, and still retains all of that beauteous chime and clarity. It just rides the edge of feedback, where when you lay back a bit you can tell it's close but it never goes over the edge, and when you push it, you can get it to feed back all you want. Lots of sustain and can get pretty aggressive too. Just the bomb. Gotta love it.