I actually do not own one but keep hearing fantastic things about them. It drastically improves the amount of aroma the nose can pick up from the IPA and results in a better drinking experience. Just be careful with them, multiple people's biggest gripe is the thin glass it is made of.So how'd the glass work out? I drink a LOT of ipa. If the glass makes a difference ill order a couple.It is the same glass as the Zombie is poured in.
http://www.dogfish.com/store/glassware/dogfish-ipa-glass.htm