I'm a little confused as to your need.
Will you be getting a replacement 680i board in due course & just need a stop-gap board which is stable at stock ?
In which case consider the Gigabyte S3 945 or Asrock x-fire conroe.
Or, if you want to replace the above board, the best for stability (& decent O/C too) I would say is the BX2.
The Asus 650i is probably the best value for money though.
If you just want another 680i board A.S.A.P. then RMA your original, the next one will probably be fine. As noted by james_earl, the 680i boards are all the same, apart from the ridiculously over-priced ones. Your next board will prob be fine. The BFG is the best for warranty though, I believe.