I have almost every modern Boogie, a Triaxis Simul 395 rack rig, a Bogner Xtasy half stack and a Einstein with 2-212 diezel cabs and guess what I play thru every day? Classic rock, Floyd, Rush, Zeppelin etc....Ja, you are correct, the Einstein. It crushed the Mesa's (they all sound severely under biased and cold/tinny in comparison) and is just slightly less warm and midrangy than the Bogner which honestly is also pretty great, BUT all of the tones on the Einstein fit the bill for me. I don't feel it's a Neu Metal amp at all...too classic and warm for that (although with some EQ it'll do that as well) plus the harmonic content is so sweet and never shrill yet you never really find it lacking any high end either. Just gets better the louder you turn it up. I'v played thru almost every amp at one time or another in my 25 years of playing and the Einstein made me stop looking at other amps (other than another Diezel). Anyone want to buy a Stiletto, or a Roadster? or a Lonestar? I don't even turn them on any more! Buy the Einy, you'll love it.