The fine folks at Soliloquy were very high on the sound of the SAT5 when combined with their sub(go for the 5.0 if no sub). Placement options are much better with the SAT5 since they don't have that large rear port as in the 5.0 and 5.3(in my experience Soliloquy speakers image and soundstage best with a lot of breathing room). I use a McCormack DNA-0.5 Rev. A that works well with my 5.3s, and Soliloquy frequently uses Art Audio and Sim Audio electronics for shows and for voicing their speakers. They've also just teamed up with an electonics manufacturer(can't remember the name), so they'd be an obvious choice too. All in all these are excellent speakers that compete with models twice their price. Haven't heard the 2A3. Best of luck.
Tim
Tim