WSA
www.worldsexarchives.com
I believe there is a nominal membership fee, but it is loaded with information on every country you can imagine, and it has regular contributions from its members who are very good at providing honest answers to questions.
Three areas to consider: Central and South America, the Pacific Rim and Asia, Eastern Europe and Russia. All have their pro's and con's, and alot depends on your language ability, travel plans (alone or with friends), skin color preferences, and so on.
I've been to Costa Rica, and thoroughly enjoyed the country, people and women. I personally have no interest in the Far East, but it does have a thriving sex tour industry. I am, however, planning to visit Russia in December.
I considered the Czech Republic, but after doing some cursory research, found that the REAL prices available are not significantly lower than you'd pay in Toronto. English is also not widely spoken in the general public, and certainly not with the typical working girl.
Russia Moscow and St Petersburg) on the other hand has direct flights, a large ex pat population, significantly less expensive rates for women, and easier communications due to the fact that far more people speak at least some English.
PM me if you have questions.