For what it's worth, regarding the life of modern SSDs -- the anecdotal thing I've heard is that you could be rewriting the entire drive for more or less your entire lifetime and use less than half of the total write cycles the drive has on any given area. Although without wear leveling... well, the SSD will still rocking well after we're all gone.

I have a SATA SSD in my modern laptop and although I don't know if I would've paid for it at retail price (I got it in the weirdest trade ever) I have been extremely happy with it, in terms of weight, battery life, durability, and mainly durability and enhanced peace of mind.

Putting one in a pismo would yield low power usage and high durability, but it would be of questionable overall value unless your pismo were in pretty fantastic overall shape.