Forget the Theta. Pretty soon I will try the HTPC - LYNC AES16 - Metric Halo. The latter is a serious piece of equipment and an excellent DAC with amazing specs. So try an Origen S21T (beautiful case) with iCore 7 3770K, the Lynx and the Halo as well as some serious DRC software and for about $10K (maybe a bit more) I doubt you can beat this combination easily if possible at all.
I am moving from B&W 800Ds, HTM1D, 4 x 803Ds, 2SCMS to a full Danley Setup with 3 X SH50s as LCR for start and then 4X SM96s for surrounds and 1.5Kw per channel eventually. I will make a thread with my findings but I am still at the planning stages apart from the Danleys that I am getting soon.
P.S. No offense but I feel I had to write something useful in this thread for those who had the bad luck to read till this point!