Masciarelli "Marina Cvetic" --$25 and about as good as can be done with Montepulciano di Abruzzo.
Viticcio Chianti Classico '01 -- $24 and a very respectable Chianti that is an easy food match.
Zind-Humbrecht Pinot d'Alsace -- $20 for a very fine Alsace white.
Chateau Vitalis Pouilly-Fuisse Vielles Vignes '04 -- $22 for an excellent unoaked Chardonnay from Denis Dutron, one of the great vignerons of the Macon.
Of course, if you really want to go to $50, you can slay everyone with a 1997 Fattoria di Felsina Berardenga "Rancia," a single-vineyard Chianti Classico Riserva. Just make sure rare steak and bitter greens are on the menu.
Also for $50 you can get a Guy Bocard Chassagne-Montrachet 2002, which should be equally impressive--classic white Burgundy.