Ken the bug guy and Swifts inverts are probably the most recomended from the people I've bought from and known.
Also, I agree that you should not venture into birdeaters unless you are experienced. Even a "docile" giant tarantula is a handful, especially if it is moody. I would say go with the Brazilian Black from your choices, maybe even move to something more aggressive (after keeping something, if you haven't yet) before going to birdeaters.