I have been in Thailand only once. But a long time for my job.
I understand poster. I don't like Pattaya, just say this straight-forward.
But, more girls, more crazyness, more total extasy. But much less charm.
For phuket, I say, every beach another fantasy. Not for the girls, but the athmosphere. There is something for everybody in Phuket, not in Pattaya.
There are many ugly girls in both. Stunners ,I found esier in Pattaya, because everything is more in your face, and the place is more for single men, then for families. But most of all, much more choice!
Phuket is more relax. I like young Asian women, at my age, it is paradise. But I feel less "guilty" in Phuket, but that is just me...
But hey, I am a bachelor, I do what I want! As long as nobody takes my cane away, I am happy!