Hi, I am interested in the Sunfire Ultimate receiver and was wondering if anyone has it. If so, what do you think of it good or bad? Any regrets for buying it? How's the noise floor on it? I've read reports of a couple of owners that had early production units and they complained of audible hiss and hum levels. Sunfire says that they had a bad batch of transformers in the early production units, but that they have identified the problema and supposedly newer units are fixed. I orderd one based on the very good to excellent reviews and comments thus far on its sound quality. But are there any other quirks or bugs that I should be aware of?