I am looking for an FM transmitter for my ipod nano to use in my car. 
I want to know which FM transmitter will work the best in the car with
my IPod nano.  It can be one that plugs into the cigarette lighter or
one that doesnt.  Thanks

I can't offer a recommendation, but can give an anti-recommendation:
my Belkin one sucks.  If you have a cassette deck in your car, get one
of those tape converter thingies instead.  It will likely work better
than any FM modulator, especially if you live in an area where there
isn't much dead air space on the FM band.