The Sabertooth is the better mobo of the two, OC's better, handles DRAM better, runs cooler, much better quality and QC, I myself won't use MSI mobo for client builds due to the poor QC...A good alternative might want to look at the new Z97 Hero, am setting mine up right this moment, loading all the drivers as I type
The Z87 Hero is also a great one (have mine in sig)