From a personal viewpoint: (I'm a fit Asian in my mid 40's)
Babylon: The pits for me. Too old for the farangs (not my taste either but complete lack of interest from them) and too Asian for most Thais there.
Mania: Love it .. dont often get the "A" boys .. they are major picky and it's a complete waste of time for me to try to chase them .. unless they get a feel of my dick ..
.. but the rest are great .. and really good sex .. I think it is sticky rice there up to a point; if you are in good shape, it's no problem ..