Best FM transmitter for Ipod

my car unfortunately doesnt have a cassette player..

for those of you who use an FM transmitter for your ipod in your car which one would you recommend?

Ive heard the iTrip has been problematic for some people, but i here it all depends on where you live, i live in phoenix Arizona.

maybe i would be better off installing a cassette player in my car under the dash or something? does anyone know if you can have a separate CD player and cassette player in one car?

thanks for all the help.

the fm transmitter way is not the best idea.
i have the tunecastII by belkin. it's nice. but im also taking it back to circuit city on monday. look for an alternate route if possible...