Plextor Facebook team here - as this older thread will appear in searches let me cover a couple of the points that might be useful for others:
Quality - the annual failure rate tables I've got from 2010 show Plextor and Intel as the lowest failure rates in the consumer sector (both 0.59). I've heard that our failure rate is now even lower, but don't have details from other manufacturers. And of course we back our drives with a five-year warranty.
Techradar has a review of our M3 SSD - http://www.techradar.com/reviews/pc-mac/pc-components/storage/disk-drives-hdd-ssd-/plextor-m3-256gb-ssd-1059603/review
There is also a faster M3 Pro which is too new for reviews
We tend to put the latest reviews on our Facebook page (search for) PlextorGlobal