Thailand is much more developed than the Phillipines and the p4p scene is enormous and easy to navigate in Thailand. The only advantage Phillipines has is people speak English.
A week isn't a long time but you can hit BKK and Pattaya (2 hours from downtown BKK and 90 mins from the airport) in that time. Pattaya is the sex capital of Asia and a must for any bloke to visit at least once