I often nip in charity shops to see what beer glasses they have! So I have an eclectic selection from which to pick. But I could easily add a lot more!
I have about 400 to choose from....
But I tend to use a Kingfisher one or a Reading Beer festival one for home brew. Or a Newquay Steam Beer one (bit partial to Newquay Steam Beer artifacts )
For commercial beers I try to match the beer with the glass... Such as these:
I am a strong believer that beers taste better in the proper glass.
Glasses are pretty good value on eBay at the moment