I'll agree that the amp falls on the low spectrum of high gain - metal amps. Speaking in terms of the original.
BUT, sometimes I think it's very easy to lose sight of the value of a cheap amp. I've played high end, I've played low end, at the end of the day I always still love playing. Also, I'd say if you're playing alone all the time it's soooo easy to pick apart the tone. You can sit their and nit pick the eq and tweak until you bleed from the ears but throw an amp in a band setting, it takes a lot to make an amp complete shit.
I've seen the VK side by side with a ton of high end amps, it always held its weight in my opinion...and further, sometimes beat the shit out of the tone of the rival. Further, I can say I dinked around with one once at a used shop (thought about buying it)...I threw an OD in front of it as a boost and an EQ...the thing ripped man...just saying.
I'm glad amps like this exist because I've seen too many rad punk/hardcore/metal bands that wouldn't have done shit without a cheap, 100W, tube amp.