Phil's are really nice for track. The allen-key bolts on the rear axles occasionally aren't enough to keep your rear wheel from slipping, but you can upgrade to the conical BMX bolt assemblies that Phil sells, and those are bulletproof. They also avoid galling of aluminum or titanium stay-ends. Also, you can get any exotic drilling or slotting you might want, so if you want hubs to build 24 spoke Zipp 360's on, Phil can supply them. And there's no better service anywhere than what you get when you call Brent.
By the way, Phil got a knock for the stiffness of their bearing seals. Well, they responded both with a black bearing (black seals instead of red ones) that are extremely smooth and supple (and don't cost extra if you order them when you get the hubs) and also some ceramic bearings (at considerable upcharge). I'd just go with the black ones -- they roll better than any loose bearings. Very nice.