I will be visiting the Sacramento area June 10th - 12th and I would like to experience the "best" GFE provider both in sacramento and in san francisco - awaiting your suggestions!

Well, I certainly hope others post their recommendations but here are some ladies I would certainly check out if I were in your position:

San Francisco Area:

Elise:
http://theeroticreview.com/reviews/show.asp?id=32468

Lauren Nicole:
http://theeroticreview.com/reviews/show.asp?id=11417

Tia Paybon:
http://theeroticreview.com/reviews/show.asp?id=36741

I've spent a fair amount of time with Ms Paybon and each time gets better than the last!  

Sacramento Area:

Sweet Melody:
http://theeroticreview.com/reviews/show.asp?id=8765

Melody is quite the ball of passionate fire!

I also hear great things about Maddie:
http://theeroticreview.com/reviews/show.asp?id=18253

Sophia:
http://theeroticreview.com/reviews/show.asp?id=25352

Good luck!

Peace...