Ok, you guys got me second guessing myself so I just brought the Omegas and the Belles Aria together again. Super simple system (MacBook Pro, Meridian Explorer2, Aria, Omegas) in a tiny room and I have no complaints other than the deficiency at the very bottom. These things sound like they were made for each other. On a bang-for-the-buck basis, they embarrass the much more expensive Audience speakers in the same setup.
Those of you who are struggling with Omegas and SS gear, are your rooms treated at all?