Zane, I don't think you can do better with Marantz than Monitor Audio. Take a look at the Silver and Bronze series and you'll find several great options. Marantz and MA make a beautiful combination.
Yello, well I have Marantz sr6300 and B&W dm601 s3 and they sound great. For your room you may TRY!! DM 603 or 602 (not 602.5) S#. Monitor Audio B2,4 or silver series have very sweet sound and long bass extension but bass is not that accurate and poverful as on B&Ws. Summary Maximum detail and clarity B&W MonitorA for less money equally less performs Heard Mordaunt shorts, fine,nothing speciall but the winner is B&W.