I'm lucky enough to have both amps now. I've read the mini-shootout thread but have my own little twist to it. I very much agree that the LMII is quicker, punchier, and warmer, with more headroom. The Shuttle is more hi-fi with a great tubey vibe but lacks the pure SS hit that the LMII has. Both are good - but they are very different. Here's the interesting part. I have Epifani UL112 x 2 and Markbass 104HF/151HF cabs. It for some reason seemed logical that the LMII would sound best with the Markbass cabs and the Shuttle with the Epifani's. But in actuality, the LMII's warmth is best brought out by the hi-fi nature of the Epifani's whilst the Markbass cab's less sizzly high end tames the Shuttle very nicely. It's really early on for me. I haven't messed much with the EQ and I won't be in a live situation for a week or two, but I'm gonna see how they do on the battlefront. I know I'm stating the obvious, but I think it may give some people insight when choosing the right amp/cab mix for these little giants. As always, IMHO.