I got a chance to play a few things today that I hadn't tried before, which is always nifty:
First, a Krank Revolution 100 Head. I really liked it. It says something to the effect of "Amp you can play with no effects" and I could see myself playing it with no effects... well, maybe a reverb. In all fairness, I could play a lot of amps with no effects. I didn't turn up too loudly, but got some air moving. It had more gain than I could ever probably use, and depending on the settings and the amount of gain, it did a convincing vintage rock sound as well as the crushing modern high gain sound. The real secret to the gain channel, IMO, was the presence knob. It changed the character of the sound COMPLETELY with just a little tweaking. The clean channel was also top notch. I would love to own this amp. Played a ESP Viper 30th Ann. with EMG's. A lot of amp, but a hefty price tag too - $1600 for the head.
Crate V-30: Nifty little 1x12 combo amp. I'd heard good things about them before, but had never laid hands on one. I played a Fernandes Ravelle with a JB in it. As I was about to plug into the DSL401, Scott the salesdude said "play the 30 instead - it sounds better" And it did! I've spent a lot of time with 401's before and the V-30 really does sound a lot better for a lot less cash. The clean channel was really sweet and got some cool breakup when Scott came and cranked it. Pressing the boost button yielded some sweet AC/DC-esque tones. The gain channel was surprisingly good too - It had more than enough gain (though in a much less "bonecrushing" way than the Krank) and had a myriad of tones depending on how the controls were. My favorite was a Tool sounding crunch I got out of it with the mids cranked up and the gain about halfway. The V-30 is a lot of amp for $750.