Be aware that SSD drives don't last as long as normal ones.
Plenty long enough though...
2 Million write cycles (MLC) or 5 million (SLC) before wear is a lot of writes.
SLC units get used in SAN storage systems which get absolutely hammered on use, far more than a laptop or desktop PC which is possible switched off, or idle for the majority of its life.
SSD "wear" is FUD.
Taking the lowest of 2 million, and assuming perfect wear levelling in the firmware, you're looking at 5 decades of use at 80Mb/s on a 64GB
Or...
(2,000,000 x 65,536,000,000 x 8) / 80,000,000 = 1,638,400,000s of continued use
Divide that by
60 to give you the minutes
Then another 60 to give you the hours
Then another 24 to give you the days
Then 7 to give you the weeks
Then 52 to give you the years, which comes out at 52.
That's flat out usage.
Don't all rush to the shops now....
BTW, I wrote that in this thread back in May, and things have got cheaper since then...
http://www.talkphotography.co.uk/forums/showthread.php?t=230500