Anybody have experience with these amps? I'm looking for a 5-channel amp for my LSiM's, and these three are on my short list. Prices seem comparable. Good reviews on all. Other suggestions? I know I like the Parasound HCA sound. I don't have any first hand experience with Rotel or B&K, but it would be nice to try something new, plus the HCA doesn't have balanced inputs. Thanks!