Zeikos 82 mm filters ,,, any good??

I've just got the Nikkor 50mm wide angle for my Bronica S2a. The lens is in lovely shape, and I'd like to keep it so. So....I'm thinking a skylight filter. 82mm filters from the majors, Hoya, etc, are pretty expensive. Any thoughts about the far cheaper Zeikos filters?

There are several comparison tests if you google zeikos. Very positive.

I use Zeikos for my video cameras, 72 & 77mm. I shoot a lot of outdoor events and I have to pretty much consider my skylights as throwaways every season, they just take too much abuse (better than considering my camera a throwaway!) The Zeikos is just fine, and a skylight is one filter you don't need the color accuracy of a good ND vs. a cheap one with a color cast.

The Zeikos circular polarizers are also great products; for my big broadcast "video" cam (built-in lens, XLRs, etc) I only use a skylight, polarizers, and occasionally a graduated ND. No color shift problems with the Zeikos, I think they're in it to win. (For really "pretty" cinema-look shoots I use DSLRs with 4x4's in a matte box. Wish Zeikos would get with the 4x4's.)