Unless end users report otherwise... seems as if latest firmware fixes the major outstanding issues with all current SSD controllers. Thus, AFAIK no current controller to avoid EXCEPT the Indilinx Martini that is in the OCZ Vertex Plus. Not even sure if it is a controller issue, or just an OCZ issue, but man that thing has terrible end user feedback. Just did a quick look and it gets over 50% 1/5.
Problem with the Vertex Plus is that there's still tons of drives out there with the old, faulty firmware that is almost guaranteed to cause file system corruption within a week. If people don't update the firmware first, they are definitely going to be having problems and complaining, versus Sandforce controller based drives that it seems to be much more random and unpredictable.
Another problem was that some people couldn't update their firmware even if they knew of the problem. I am not sure why this was the case.
In any case, if you have a system without a Intel 945 chipset based system (no idea if this incompatibility was fixed yet), and you can get on the fixed firmware, the drive seems to work fine. It does for me. I'd definitely take one for free if offered.