Some cheap ones are pretty bad. I bought the Monster Cable one and it held up really well on a trip from Hartford to Rochester, NY and back. You can pre-program several stations ahead of time and if it gets noisy you just change the channel. I only had to change the channel a couple times. It wasn't perfect, but then again the Nissan Frontier I was driving was so noisy it really didn't matter that much, and I know that is quieter than my Roadster...