+1
I can't recommend Dungeon Fantasy enough. It's built upon the extensive toolkit which GURPS provides, but with more focus on the style of fantasy which I was familiar with via d20 games. I've found that -for me- it strikes a pretty good middle ground between what I've come to enjoy from GURPS, and the elements of D&D and Pathfinder that I like. Thirdly, with the mentality that GURPS is built upon and leans toward, I've found that it's fairly easy to convert old D&D adventures to GURPS Dungeon Fantasy once you get the hang of the system; the mechanics are different, but some of the spirit behind the product is similar enough that it feels right in play.
There are some pretty good blogs about using Dungeon Fantasy. One is here:
http://dungeonfantastic.blogspot.co...00-04:00&max-results=7&start=35&by-date=false
This part links to session info:
http://dungeonfantastic.blogspot.com/p/my-df-campaign.html
Here's a blog about running The Temple of Elemental Evil using GURPS:
http://d20to3d6.blogspot.com/