TubeNet

Depending on your specs and price range, I would suggest you contact the seller of a like-new MW2155 with three (3) cases in suburban Chicago. You will probably have to ship yourself for the play-test, but it might be worth it...
http://www.bassclefbrass.com/index.php?a=2&b=296

It will be much easier to find a "Meinl" Weston than it will to find a "Meinel" Weston.

Having said that, check www.bassclefbrass.com. Also, check with folks like Dillon Music, BBC, or Custom, as these may be more likely to offer you a test play than would a private seller.