There was a very good thread here dedicated to reviewing kinds of sex toys - not partiucular brands and models, but explaining how they work, what stuff is good and what's less good or likely to break. Very informative one - too bad the people who were in charge of it are no longer around much here and not likely to return, but it's a good one to bookmark.

http://www.bdsmlibrary.com/forums/showthread.php?t=9502