Pattaya ...stayed there with my brother and his young family in company holiday house a few years ago.Out of town it was. Nice.
Didn't find the sex industry scene intrusive at all but wasn't there that late at night...girls seemed more interested in the little kids in our party than the blokes.
frankly..beaches I agree are VERY ordinary and I didn't think the water looked too clean..but its nice and handy to the new airport these days I would imagine...those other islands sound nice...!