I owned both. The BAT was a little dark and grainy in my system. However, I never tried rolling tubes, so that might have resolved the issue. I bought it new and kept it less than a year. Build quality and ergonomics were excellent.
The Rogue 99 magnum was part of a system with the M150's. I loved it, although it was a little more noisy than the BAT. I used the internal phono for a while, but then upgraded to the Stealth. The Rogue gear is very responsive to tube rolling and the guys at Rogue can help you with best tubes based on the rest of your system.
I would own Rogue gear again. It's well made, can be easily upgraded with better parts and tubes, and is very reliable. Plus Rogue customer service is legendary.