Anything which swaps out a lot or otherwise carries out a lot of disk writes will be bad for solid state drives, as flash memory has limited rewrite cycles, beyond which the memory will begin to degrade. I don't know the extent to which this affects SSD, but it is certainly a consideration for Compact Flash.
So basically, you want an OS which doesn't use vast amounts of RAM to reduce swapping, and doesn't access the disk unless it's actually doing anything. Windows is therefore not ideal, as it seems to use the swap file all the time, and also seems to be carrying out disk activity for certain purposes even when the machine is supposedly idle.
Probably the best bet would be a light-weight Linux distro which has a small memory footprint and has minimal background services running.
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moto
