You will definately want to do your homework. Not all hoods are created equal.
As for Fiber Images, a friend of mine bought a hood from them. The first one was warped, they sent him a second one which was also warped. Im not sure if he ever got it resolved, I havent talked to him since. But that makes me a little leary of them. Ive heard several other people with similar problems. Youve been forwarned.