Entry #12 looks like the pepsi symbol so we are leaning away from that one. We like entry #8 - can you add a little orange to that? Entry #7 - my dad said it looks like the dallas cowboys so if you could play with that shield a little.
entry #17 is my favorite from you so far. Can you make Personal Best all in one color (blue) then add competition swimwear under it like you did in #15. You don't need to keep working on the other ones. This is the one we like best from you :)