This may seem trivial but I just dont like the Blue colors used on the UD3R. Thats why I was drawn to the Sabertooth. Silly I know...
The only overclocking feature you really need is the ability to increase the BCLK from the default of 133 to 160 or so. Every X58 motherboard I know of has that capability(does intel?) That gives you a reliable and conservative overclock. The sabretooth looks to me like a good board with nice features at a good price.
Go for it.