Quote Originally Posted by mwfanelli2
Heliopan are also excellent. Skip the Promaster. Go with the big three: B+W, Heliopan, or top-of-the-line Hoya. The circular polarizer will set you back roughly $75 USD and up.
Actually the Tiffen filters are pretty good too; although they aren't nescessarily as durable as the others (rings are easy to bend because they are aluminium and not brass).