Bach: Six Suites Unaccompanied For Cello

Hi I was wondering of the 3 Cello soloist, which would you recommened getting, and maybe some explanation on how these recording differ.

1- Janos Starker on Mercury
2- Daniil Shafran on Eterna/ Melw Russian copies
3- Pierre Fournier on Archive, which one to get?

all very expensive
thanks