I've been happy with the touring South Americans I've tried recently. The Brazilians have been pleasantly surprising in the quality of service they give. They genuinely seem to enjoy the sex. Far better than the Roms. Ok there's the odd good Rom but it's opened my eyes that whilst there's the blatant "you cum yet bby" Sp's, even with the better Sp's, they only let you fuck them in different positions, they don't actually try to give you the impression they are enjoying it. They're very good at talking bullshit so if you're not careful, you end up with the booking being 10%sex and 90%...... talking bullshit.
So my advice is try a Brazilian. From experience, the ones posting age late 20's tend to be mid 30's.