Beaver, get a free membership to the first site I posted and check out the photos that other users post from all the clubs in AC and the girls they've bar fined back to their rooms.If you're a boob lover, Manila has it all over AC. I found there were lots of girls in AC, but I wouldn't touch the majority of them. The first girl I had in Manila had the best rack I've seen in 47 years, bar none. Manila definitely is more expensive than AC, though. Filipinas tend to be more GFE. Never been to Thailand, but I had no issue traveling alone. One thing though: it's true to beware a single Filipino who comes up to you on the street wanting to help you out with anything.
Bobzilla is right though, the Manila girls are much nicer because its a magnet to so many girls across the country who want to be singers and actresses (kind of like in L.A.), but a night at a good club in Makati could also get you a week's worth of pussy in AC. There are more than enough sexy girls there to offer you something you'll like.