I prefer the Headhunter but I really lean to Citra and Mosaic hopped beers. However, H2P IPA by Voodoo is maybe my favorite IPA right now and they just use Simcoe (maybe Mosaic too). Yes it stands for Hail to Pitt. Only available in growlers at their homestead site though.
A couple months ago I had a pretty amazing DIPA at Roundabout but its off now. It was almost as good as Lawson's Sip of Sunshine, which might be the best IPA I've ever had. Spoonwood's DIPA is great too, they've improved a lot since they opened. The same goes for Brew Gentlemen in Braddock, really good Double IPA.