I would order from canogacamera.com. They are a great shop in California, and their shipping costs are much better (fair) than b&h and adorama.
As for filters, this is another "fun" topic to talk about. I use them (Hoya super UVs) on all of my lenses, and I feel they do add something to my photos (only good, not bad
), and they protect the front element of my lenses. If you want to use filters, do not go cheap. If you are about to spend 1k on a lens, don't put a 15 dollar filter on it.
Kimo
As for filters, this is another "fun" topic to talk about. I use them (Hoya super UVs) on all of my lenses, and I feel they do add something to my photos (only good, not bad
Kimo