It seems that everyone that owns one of the sunfire amps arrives at the same conclusions. I'm in total agreement with the two previous posts, so will add something else to the mix. I'm currently running the TGII with the CG signature, with balanced custom silver interconnects and an all Alon by Acarian speaker setup. My interpretation of the amp's character over the past six months is a few light shades to the warmer side of neutral. Having said that, it seems to cast the same amber glow on the sound that the level meter casts into the room (I happen to love it). The alons are notorious for being very neutral and, unfortunately in cases of poor sources, ruthlessly revealing. The Sunfire gear adds just the right amount of "glow" to the Alons to make even poor recordings bearable. It is the Sunfire gear that now allows me to hear the breath before the word or the fingers on the bass string. In short, I suggest leaning towards a speaker with more neutrality, perhaps even on the cooler or bluer side of the spectrum. This will allow the sunfire to light them up. I auditioned our gear with last year's Monitor Audio silver series, which mated wonderfully and are dirt cheap on this website. You might even look toward the Energy veritas series along with your current targets. Most of all, don't feel overwhelmed with the possibilities. Enjoy the courtship - the process can be as fulfilling as the result.
Cheers!
Cheers!