I've tried a number of different FM Transmitters from Future Shop and most have sucked. Too much static when I play it in my car (I think I may have an electrical problem in my car giving off too much interference, but that's besides the point).
I just got a Belkin TuneCastII FM Transmitter (mine is black/grey instead of white) and it works great! I love the cigarette lighter plug-in, as it seemed to provide more power than the batteries. Another great feature is how this one has a much larger FM range to transmit on as well.
I'd definitely recommend it. Give it a try, and it if you don't like it then return it. FS hasn't given me any problems when I've done that in the past.
***Edit to add: ***
Mine appears to be this one:
http://catalog.belkin.com/IWCatProductPage...oduct_Id=166903
Model #F8V3080