I don't have a V-Ampire but I do own several Bugera tube amps which are a Behringer brand. I would encourage you to look at the Bugera's even though they are a little more expensive - but much less expensive than similar tube amps.
I've spent a lot of money over time on amps and pedals to try to get a great tube overdriven sound and never achieved it until I actually bought my first tube amp. If you're going to spend $200 for an amp and another $200 or so on pedals, I'd suggest taking the $400 and try a couple tube amps that would be around that price range.
-Joe