I`d look here: http://www.tomshardware.co.uk/buy-ssd-recommendation-value,review-32349-5.html
or http://www.thg.ru/storage/vibiraem_luchshyi_ssd_december_2011/vibiraem_luchshyi_ssd_december_2011-05.html
2nd link is in russian, but everything is understandable (1st level (уровень) is highest...