Yep, sorry, never saw your thread :x.
I've so far had the following SSDs in my
Late 08 Unibody Macbook, results.
Corsair Force 3 120GB ------ 1.5Gbps
Samsung 840 120GB ------ 3.0Gbps
Samsung 840 EVO 250GB <Current> ------ 3.0Gbps
So I'd guess the 840 Pro would also work just fine, I have never tried one :\
Cheers