We've only been to Orient Beach and have loved it. We have had our son there and he didn't even notice the topless women because he was having so much fun on the trampoline as well as the waverunners that are there.
I think this year we'll try Dawn Beach to see how it compares and I'm sure we'll love it. Hey it beats this 17 degree non-beach day we're having here.
I'm sure you'll love either one you choose...if only this were the only tough decisions that had to be made.