I use the Crucial m4 256GB myself, so I'd say it's a good boot drive, though possibly not the best. I wouldn't go by the rewrite cycles, though, because even a 64GB ssd probably has enough rewrite cycles to last until you upgrade your computer again, at which point cheaper ssds or some other better storage technology may be available.
Edit: I looked up some numbers, and according to
http://techreport.com/review/20646/crucial-m4-solid-state-drive the Crucial M4 has a "total bytes written" (TBW) rating of 72 TB for the 128GB, 256GB, and 512GB models (only 36 TB for the 64GB model), but at 40 gigabytes a day, that would still take about 5 years to reach, and I doubt a gaming rig averages anywhere near that much per day (a file server would get a lot more)