I've been crunching on an SSD Raid 0 (mainrig) for a while now, no issues or even performance degradation I can see.
These are cutting-edge 3rd generation SSDs though, which (thankfully) have become rather affordable. Just trust me when I say that the old Jmicrap-based SSDs were garbage. I've RMAed more Patriot Warp V1 & V2's than I care to count, and some of them didn't even last half a year. I actually blew through 2 or 3 32GB Warp V2's myself on crunching rigs.