Hi tritube, just curious what you ended up doing. I was in your position 2 years ago and can empathize. The good folks here on Audiogon also provided me great advice like they have above here.
Black Ice Audio came up as something for me to look into. I can vouch for everyone's positive comments on Black Ice Audio. I started out with their F22, as it was the most I could afford. Then, I found a used F35 and pounced! I have rolled tubes to TungSol KT-170s to maximize the power, as I am driving ATC SCM 11v2 speakers - albeit in a small 8ft x 10ft home office. So, this set up works for me.
In addition, I own their FOZ SS-X, and their DAC. I am happy with all of them.
I also have had awesome experiences with the customer service. Jerred (CEO) is very passionate about their products. I have traded emails, had phone conversations, and have had the pleasure of meeting him and Mike on a few occasions.
My 2 cents as a customer of their products, FWIW.
Cheers.