Careful what you wish for, though, this forum recently cost someone a pretty penny in V-drums because he asked a similar question.

Oy vey. You don't know the half of it! Your timing is funny, because yesterday I just dropped $350 on upgrades to my Vdrum set. It is a really sweet kit now, though.. I think I'm finally getting towards the end of my "need to upgrade" stage. And I've actually gotten pretty decent in the short time I've had it! V-drums are great for learning, that's for usre.

I'll post a picture later of what you've gotten me into.

Keyboards can go the same way, though because they're much more popular than electronic drums, the prices are a bit more reasonable, and once you have a good keybard, there aren't many upgrades you need... E-drummers really get jobbed because it's such a niche market.