[amsat-bb] Good mobile antennas to use

I am looking to get on the FM satellites while mobile and activate some different grids. Can anyone recommend a good mag mount dual band antenna to use for satellite work? Does the MFJ 1/4 wave mag mount antenna do pretty good on the sats? I am guessing a 1/4 wave will cover more of the pass than a 5/8 wave would.

73s John AA5JG