Well, then, that depends upon what you feel you lack in your life. If you don't have a GF and you want one, then get the GFE. It'll make you feel better.
If you really don't want or care for a GF, and you just want some wanton, guilt-free, lust-laden sex, then get the PSE. Easy peasy! I mean easy piece-ey!
Of course, the best is the GFE/PSE combo-experience. You go out with the hooker for an evening on the town. She acts like your girlfriend at dinner, the show, the stroll along the riverwalk, etc. All prim and proper, lovey-dovey, and shit. To wrap up the evening, you drop by your parents house to show her off. It goes something like this:
"Hi Mom, I want you to meet someone. This is my friend Trixie."
"My son, she's really nice. She's quite a pretty woman, isn't she."
"Aw shucks, Mom. Cut it out. You're embarrassing her."
Then you and "Trixie" go back to your place, and she puts on the PSE for the rest of the night and into the dawn. What could be better? It's the best of both worlds!