I've been following this thread since its inception.
Maybe this is the obvious observation, but it does seem like all the MBA 2012 64/128 SSDs are Toshiba, and all the 256/512 SSDs are Samsung.
Has anyone found an exception to this case? Seems that they've stopped mixing in Samsung SSDs in the 64/128 SSDs like they did in the MBA 2011 models.
I was at the Apple Store yesterday looking at the base 13" with the 128GB HDD - checked system profile and it was the Samsung Drive. I just ordered a MBA myself, so I really hope I get the Samsung Drive. I'm not sure if I should return it if I don't... seems picky.