The Marantz is used primarily for HT duty. It gets a bit of 2 channel use but for casual listening. I think it sounds good but in reality the Marantz is just a pre so mainly switching and bass management of the fronts and sub. The speakers are Energy Veritas 2.3i powered by older Outlaw monoblocs with an older, their first I think, Outlaw sub.
I like Steve's suggestion though. I have been happy with all Emotiva gear I have owned. The Airmotiv speakers are ridiculously good for the price and the Stealths look to be even better. Big fan of active speakers both for system simplicity and sound.
@shelly - I leave my Airmotivs powered on in the office since I listen to them whenever I am there. The headphones get little use now. I am sure it annoys some of my colleagues, but that's just a bonus.