Christian Sager , Sep 13, 2007; 04:15 p.m.
Whatever you do - dont buy a cheap UV filter.
I'd recomend Hoya Super Multicoated, Canon , B &W or other high quality brand.
You are much better off NOT adding one than adding a cheap one. This debate has gone on for years.
Before you spend a bunch on filters or lens hoods - are you committed to the 18-55? If not - figure out what size filter you might need for another prospective lens.