The 70cm is close enough to GMRS frequencies to get a good idea of performance. Many 70cm antennas can be used with out problem on GMRS.
The Nagoya 771g will likely be a good choice. Smiley antenna has a good 465MHz antenna line that is equivalent or better than the Nagoya.
I think the ABBREEs are more of a novelty/“Airsoft” antenna. They work, but I find signal stick, smiley and Nagoya to be better