I don't know if there are any antennas that have a built in booster or not. I generally don't like signal booster as they can add noise to your stereo signal. With the reception being so horrible though, a booster isn't out of the question for me. I really don't think that a bigger or longer antenna will do any good though. Actually antennas are a compromise altogether. Depending on what station you are listening to and the frequency being transmitted you want a different length antenna for each station. For instance a short antenna would pick up lower frequency stations better (i.e. 92.5 on your FM dial) while a longer antenna would help you pick up stations on the higher frequencies (i.e. 107.5). It might actually be the other way around, I don't remember for sure, but it is something like that. The ideal antenna would be an automatic one that would extend and retract to different lengths depending on what station you were tuning to. That's the theory as I understand it anyway.