I don't like the Thai stretching because I have a tendon and cartilage tear in one knee--and prior surgery there. I warn them, and they try to do a gentle stretch, but it is always swollen and sore for a few days after. Plus, I would rather spend the extra time on extras or on finishing a good massage.
However, the stretching part sometimes gives the closest thing to erotic contact that there will be, if the girl does not do extras.
I do like floor mattresses the best. The only things good about a table are: (1) usually there is a hole for the face, so you can breathe while lying face down and you can get better shoulder and neck work; (2) hands to the side are close to the girl's bottom and allows for some excitement, particularly with the new girls where there are tentative moves and exploring; and (3) the girl is in a position to give a stronger massage over more of the session--on the mattress, it is usually only strong when she straddles you and uses her weight to press down. All of these table benefits are outweighed by (as stated above) lying on the same level as the girl and being close and often in an erotic position.
So I take the mattress whenever I get the chance.