Sandforce don't make SSDs - they make SSD controllers. However, to make things easier for drive manufacturers, sandforce provided a basic reference design for a hard drive.
However, sandforce made a mistake in their 120 GB reference PCB design:
Corsair used the reference design, and ran into problems.
OCZ designed their own proprietary PCB, and have not experienced the problems related to the design defect.
This is a different issue to people having strange errors and BSODs, which may be a firmware bug (the problem is pretty consistent among dozens of reports; windows crashes with STOP F4, some time after recovering from sleep mode. When the PC auto restarts from the BSOD, the SSD appears to be partially corrupted causing the boot to crash part way with various errors about missing or corrupted files. A power cycle fixes everything, and the data on the drive appears intact). The problem seems to be related to certain motherboards and overclocking - some people have suggested that the problem occurs because some OC tweaks distrub the normal operation of power-saving modes - and the drive panics after an invalid power-saving mode change. However, at present, this appears to be little more than speculation.