Replacing Everest in our labs is AIDA64. This new testing suite is from the core development team from Lavalys and continues that tradition. The guys have thrown in better support for multithreaded CPUs as well as full 64 bit support. We use this to test memory and HDDs for now, but may find ourselves opening this up to other areas of the motherboard.
SSD performance is strong, but sits a little behind our Crosshair V offering. The same can be seen with our USB 2.0 performance which sits a little behind. It's nothing too major, but something indeed worth noting.
Note: We've just updated as to the reason GIGABYTE's HDD performance is a little lower. By default they offer IDE mode instead of AHCI. While it's a little slower, it does add a wider range of compatibility. Of course, the option to change to AHCI is available.