Has anyone played one of these amps, or both? Any comments? Really want to get a grasp on the sound & feel of these. I have an opportunity to get one or both of these at a steal and am very interested. I have actually played the 1973x before, but wasn't able to crank it. FYI - I own a Gemino (Club 40) and am well aware of Greg's build quality and value. Just looking for some feedback on the two Marshall's mentioned above - cost difference would be negligible. Thanks a bunch.