If you mean rubber HT antennas, by default they all suck.
When measuring/evaluating them, all you are really doing is determining their suckiness, or to use a tasteless metaphor, you're looking for "the tallest midget in the room".
Some do work better than others, but because the conditions they are used in vary so much, what looks good in a lab or on your workbench may be very different in the real world.
I have a Diamond RH77CA that actually does perform well...for a rubber antenna! The catch is that it's about 15"/38 cm long and a somewhat floppy & unwieldy on an HT, especially when clipped to your belt. I mostly use it on my FT-817 and it will hit repeaters and simplex contacts that the lesser rubber antennas can't.