There's a lot of B.S. out there about wine glasses, but in actual fact, any good quality glasses that are in the 16 Oz or larger range, and which have a rim that is smaller than the widest part of the bowl by at least 25% (33% might even be better) will do the job. You can pick up good quality glasses that meet this need for pretty cheap - like $4-6 per glass if you shop around and don't get hung up with brand names.

Professional tasters use a standard glass called an INAO glass when evaluating wines critically. IMHO, they are too small for optimum drinking enjoyment, but the proportions of their shape is ideal. Attached is the specs for an INAO glass. For me, the best glasses to buy are those that are shaped essentially the same as INAO glasses, but are more like 20-24 oz in size - essentially triple the volume of a standard INAO glass. You can find them pretty cheaply all over if you look around for them.

http://www.edsoon.com/the-inao-glass...-the-industry/