I got an Intel SSD (G1 80GB) in my laptop to do OS development (drivers), which incidentally is a use case that requires lots of hard resets. Never had any problems with it, and it's been through dozens if not hundreds of hard reset cycles. In fact I got the SSD specifically because I didn't want to be spinning up/down a disk that much, and laptops tend not to have reset buttons (they really need one, IMHO.)
Those tend to be very safe hard resets from a drive perspective. First of all, you're not losing power, so even though there's a reset, the drive firmware maintained power. Secondly, I'm guessing you see far more hard locks and manual resets than random, sudden reboots - and if that's the case, then the drive firmware probably didn't even notice. By the time you press reset, an eternity has passed and any ongoing activities have long finished.
I can imagine a software-fault causing drive-level problems if the drive has a large cache and a broken fsync, or if the bios does some kind of unsafe hard drive reset very quickly after starting.
In any case, it's probably more likely to be file-system level reliability you'd need in the face of driver instability.
