(I bet the Polks are really nice in there. I think a pair of BIG speakers would be a lot of fun in that big room - how about Phase Linear Andromedas, Carver Amazings, Klipschorns, or even some big Martin Logans).
Carver Amazings - original and silver, M500t,C-1, C-4000, PM 1.5, M200t
Manley Stingray; Cambridge Audio DacMagic, 640p; Pro-ject Tube Box SE II
McIntosh MC2205, C28
JBL 4430, 4425, 4311B
Rega P5, Benz Micro Wood, Cary/AES AE-3 Preamp