My criteria are simple: An opening wide enough so your nose fits in when you sip and dishwasher safe with a stem that fits. I know the wine snobs will cringe, but I never bought into the need for white wine glasses, Burgundy glasses, Bordeaux glasses, German glassses, etc.
And keep in mind, I was once the wine critic for the Washington Post and Chicago Tribune and published a magazine about wine. That said, you do need champagne flutes.
Meathead, BBQ Hall of Famer - Founder and publisher of AmazingRibs.com, Meathead is known as the site's Hedonism Evangelist and BBQ Whisperer. He is also the author of the New York Times Best Seller "Meathead, The Science of Great Barbecue and Grilling", named one of the "100 Best Cookbooks of All Time" by Southern Living.