Anyway, I bought a 4-pack of Riedel's bourbon whiskey glasses from Amazon. So far, they seem to be doing their job. I'll concede that they don't feel as good in the hand as a brandy snifter, but it does do a better job of funneling the aromas, and it has a smoother "flow" in the sip than a snifter does. So, in those regards, I enjoy them very much.
If I need a wider glass, mainly for cask-strength whiskeys, I'll use a dof glass (like an old fashioned glass, but slightly curved and tapered).
My next glassware purchase will likely be a single malt scotch glass from Spiegelau.