I wouldn't worry too much about McCormack. I know a lot of people recommend the combo, but it didn't do that much for me. There are better options. I haven't heard the Odyssey but what about your YBA 3? That should sound OK.
Also, if you haven't already tried this, Vandersteen benefits greatly from bi wiring. No other speaker that I know of, responds to bi wiring like the Vandersteen's. It doesn't have to be expensive cable either. If you can find 2 runs of something like AQ Type 6, you can get a very cost effective upgrade.
Also, if you haven't already tried this, Vandersteen benefits greatly from bi wiring. No other speaker that I know of, responds to bi wiring like the Vandersteen's. It doesn't have to be expensive cable either. If you can find 2 runs of something like AQ Type 6, you can get a very cost effective upgrade.