ltwimberly wrote:
I would consider getting 1-2 strip boxes with grids. If you want to do a rim or hair light or anything tightly controlled, they'll be useful.
Also, I'm not sure there's an advantage to getting both 7" and 8.5" reflectors. Personally I'd just get 8.5" ones and grids for them.
Silver BD is more versatile than white. Silver plus diffusion sock will be soft and identical to a white BD plus sock. But beam spread is much wider with the sock. So white BD (without sock) gives you a soft, but tight beam. Neither is a bad choice, just different. You can soften the silver BD output with the sock, but there's not a way to make the white BD's output "punchy."
Oh, good call about the different reflectors if I'm gridding them. 
I love rim lighting, but hoped that a reflector could give me a hard enough light that I could get away without strip boxes. Maybe with a gobo? But then I'm into more stuff to control the light rather than just creating what I need in the first place, which is not a good trade off in a smaller studio space. 
Thanks for the bd thoughts... I have some more reading to do on that...