I really like entry 16. The "P" could double as a gauge with a needle and it's a nice simple design, very modern. I'm not sure what would take it from good to great but I definitely like that one the best.
I don't like #20, the geometric shapes never did it for me.
I like 17 but ti doesn't say Pacific or auto auction to me.
15 is closer to that mark as the orange could be an island or a wave or something.
19 has the wave effect but it's a bt busy for my taste, too many concentric circles