Let me clear some stuff up:
Mark Levinson and Revel is a Pathetic combination, etched and dry, unless you like audio special effects over music then steer clear of Revel. And the Revels are not built on Levinson equipment at all. Remember Kurt's amplifer is 10 years pre-Revel and has little more than the same name on them in common. Your 331 sounds nothing like a No. 23 and is nearly 1/3rd the power. I would recommend getting a No. 23 or 23.5 if you desire the Revels. Your 331 cannot hold a candle to them in this application.
Your best bet with a thread like this is suggest what it is you want to upgrade about your Thiel 3.6's. Some of the speakers you suggest are very similar to the Thiels you own and may not be a worthwhile upgrade in your own opinion. Plus what price range are you really in $6000 or $12,000?
Tire guy is right about your amp which won't work from a power stand point with any speaker you chose except the JMLab which will likely give you an ill matched tonal balance to the bright side. .
