Go odyssey, maybe the extreme dual mono, I went from several tube units, Rogue, Cary, love the odyssey, I heard and liked a Ayre for about 1500.00 used, and Threshold, Sunfire, mcCormack, forget it the odyssey takes the cake, especially with the low risk of money... The extreme gives you 120 amps of current per channel, 180,000 mf of capacitance, and built with Plinith transformers, and WBT binding posts standard,,, none of these amps for anywhere near the price get you that close, The sim audio I think will only get to 30 amps per channel peak, And most other manufacturers do not even give you those specs. In my experiance the Higher current Solid state design you can get the more liquid and tube quality(closer) you can obtain. Plus You can try an odyssey for an audition and no questions asked return, but they take a nasty amount of breakin time just like the rest of the Transistor based units.