okay, from you guys that's had both.  what's the difference.  i know what they mean, but i can't figure out specifically what's the difference.  so let's say you have a provider that's been on video, she's already a PS.  what's the difference from her GFE and the PSE?  i mean, is she not going to be as into it if you go for the GFE?

It is a debate that has gone on since the Pilgrims & the Native Americans invented the first porn movie on that fateful Thanksgiving night.
The bottom line is: there's no strict definition of either.  There are some guys who will say it's about such and such activity or how deep they kiss you.
A general consensus will find that a PSE recreates the acts and feel of a porn movie...  Ie: raw sexual energy, perhaps a bit of show-woman-ship, (less or no "intimate" fantasies or recreations.)  I'm speaking very generally.
I think a consensus would agree a GFE is a fantasy that attempts to "re-create" a really hot hour or two if this woman was your S.O.  (significant other).  What I mean by that is there's usually some semblence of affection or "intimacy". (A conversation, a massage...whatever.  Every lady is different and some are "acting" the fantasy and some truly attempt to connect with each of her men.)  A GFE can include the kinkiest, porn-like sex you've ever experienced...so just because the two of you are pretending to be "lovers" doesn't mean she can't also be a wild porn-like extraviganza.
So some guys say a PSE is less personal and that's fantastic for some of the people some of the time. Frankly, it's all pretty intimate to me...once I'm naked.
Some reviews will talk about the "Perfect GFE that turned into a PSE".  Things start to mix together...etc.
What the PSE and GFE have in common is the need to be respectful of the lady, be clean, respect boundaries as they arise and have a great time with each other.