Ever since OoT the Gorons for sure. Darunia was my favorite sage in that game and the Gorons as a whole were just awesome and fascinating in that game. Plus of all the races you meet they were the nicest. I also loved how they called you "big brother" after beating the Fire Temple and rescuing one. Plus what other race has a character named after you?
The "Goron Hug" scene is one of the funniest in the series as well. Plus you get an ultra-powerful weapon from them.
The only time I didn't like them as much was in TP. I still did...but they just seemed different somehow. I was pumped when I heard SS had them. I loved all the Gorons that were in SS but was disappointed in the lack of them. I was hoping for another Goron City or something.