Globalcourtesans is reliable and no BS. What you see is what you get. I have found them to be efficient, polite on the phone and very direct.
They seem to be similar to Aphrodite but make the phone experience a little more personal and friendly.
They also have some interesting film stars.
I have experienced a number of agencies pushing fake pictures or quality not equal to the picture quality, which can be frustrating. If you like Global's pictures (real when I tried them) then call them.