Quite honestly they are both quality boards and at the same price too. I would personally go for the gigabyte just because I have always used them and have had no problems with them, but from a neutral perspective then I would go for the asus.
There are apparently very many complaints with that particular Gigabyte motherboard.. I'll choose the Asus Sabertooth over it..
I was just reading alot into the complaints about the gigabyte mobo an ssd + hdd issue and thats exactly what im gonna run so i guess im not going with the giga board but r there other boards that i should check out or???
The P6X58D-E has the ability to have three-way cf or sli while the sabertooth only only has two way. The P6X58D-E also has an extra PCI slot if you need it. The sabertooth however does have a five year warranty compared to the P6X58D-E 3 year warranty.