Yes, I'd like to get the 598, but at $4000 it's out of my range. I am looking at the 47A though.
I really like the Bag End so far. The guy I bought it from used it with ML ReQuests. I think it integrates well, but I haven't had a chance to play around with position, etc. I have the LFE hooked up to it and my speakers set to "small" The original owner had his subs (he had 2) hooked up via speaker level connections off of his MLs.