I'm looking for the lightweight little brother for my Compact.
I've heard good things about Kimber's frames, and I'm sure Wilson stands behind theirs regardless.
Any feelings about SA's aluminum?
Are these all pretty much the same grade/quality?
While I can't speak to the Springfield issue, you may be surprised to learn that both Kimber and Wilson frames come from the same place. The primary difference between them has to do with specified tolerances -- and Wilson's standards are reputed to be (quite understandably) higher in this respect.