Try Danskin, they are only sold in dance stores I think, and they are expensive when compared with WallyWorld or discount tights, but they wear like iron and come in lots of sizes, and tend to fit that way, I think its because so many dancers have long legs. And, because a lot of their tights are also designed for men with thicker legs than women.
store locator here
http:// www. danskin. com/ storelocator.html
Edited to remove open link. --- Nichole