I would have to say Gimili
Mainly because he is the one that I am most famillar with, but also because he became such a great friend of Legolas, he had such a great personality, and also because of his love of the beauty of Galadriel (That is one of my favorite parts of LOTR). I also enjoy how the story of the fellowship is ended with Gimili and Legolas setting sail on a ship to go to the west. This just shows how their relationship changed their lives
