Just purchased a Canon 60D after months of internal debate.
I want to purchase an ultra clear and circular polarizer filter.
I have previously used Tiffen filters on my 35MM cCanon Elan II.
Looks like many people really like the B+W filters over Tiffen.
Prices are about the same. I did read a review that a B+W filter did not fit the 18-135mm thread.
That scared me.
My Canon G9 Flickr pictures: