I never use the fireplace, so it's not an issue. I don't want to find out otherwise. I'm renting; otherwise, I'd run the cables in the wall (and mount the rear surrounds).
Cables and interconnects are Blue Jeans or, until I found BJ, Monster. That's as exotic as I'll get.
The room doesn't seem bright to me, but in the future, I'll probably toy around with some treatments to see what's the effect.
I'm really happy with the 990. I think it's well thought out. I like that it's not overloaded with features I won't use. It works and, most important for me, sounds great. I'm sure there are other pre/pros that sound even better, but for my fairly unsophisticated ear, I know I'm starting to reach the point of diminishing returns. The wait is a killer though, as was (for me) sneaking out of work early to beat the Fed Ex guy home and sign for the darn package.