There is no amp that compares to the Carvin V3 for features, quality (USA built), customer service and tone. Nothing in the V3's price range comes even close. Ive practiced, recorded, gigged and jammed with mine since 2009. (Mine doesn't have reverb) You'll want to yank the stock tubes out and replace them. I went with Eurotubes JJ's High gain set. Rock, Metal, Blues, Country, Progressive, Pop.... it does it all. Its features are so numerous most people will never use them all. The only drawbacks that it has are the same drawbacks as any 100 watt tube head... its heavy and loud. But it is an amazing amp. And the matching V3 cabinet is equally awesome. Upgrade the speakers to Vintage 30's and you'll have a half stack that you can put up against anything out there.
In my opinion, this is THE best tube amplifier on the market right now. It has 3 different independent channels. It can sound like like anything from a Fenders cleans, to a Mesa's heavy distortion. Great for all types of music from jazz to the heaviest of metal. Personally I use for stuff like Tool, Mars Volta, and Pink Floyd and it sounds amazing.