I loved quintessential fighter. There were a few very very broken things (the archer class that can threaten at 3rd level or so), but for the most part, it's really good.
I don't mind the fighting styles, as they require wisdom mods to take. Since very few fighters have a +3 wisdom mod, it seems to benefits palys and rangers some, and other fighters will go "Aww, man!"
My main complaint was that they seemed a bit too gung-ho on the 18-20 threat range, Over half the weapons had 18-20 (or so it seemed).
QF is my recommendation for the best non-WotC product out there, and is far more useful than Sword and Fist, at least for me. It's inspirational, as opposed to "Look, more feats."