Choice of 3870x2

I am hopefully looking towards buying a 3870x2 this month and have been debating between the Sapphire and the MSI versions. The Sapphire does confusingly mention that it has a 256-bit GDDR3/GDDR4 memory interface whereas the MSI lists only GDDR3. Besides this and the fact that the MSI is slightly over clocked to 850MHz the specifications for both cards seem identical.
There is no mention of warranty periods with either, even on Scan.

So does anyone please have any comments or recommendations on either :juggle:

Has nobody got either ? :whip: