I am looking to get a lens hood. I was wondering which of my lenses would be more practical to have a hood (take a look at my signature for lenses). I was thinking about having one for each but I'd like to avoid buying stuff I don't need. I just want to avoid lens flare. Also looking for filters too. I was going to get a polarizer, UV, ND, and a red filter for b&w. I will be using my 17-85mm the most probably and the macro 2nd. Any suggestions for a brand of filters?