Uh, well, which price? How much are you willing/wanting to spend?

Your best bang for buck, at least buying new are some of the Shimano LX outboard bearing setups. Easily found for ~ $100 USD or less. No idea what would be easiest/cheapest/best to get in your part of the world.

FSA, Truvativ, Race Face also all make good stuff, from low end basic setups to high end spendy racing kit.