Just to name a few I'd say Red, Ethan, Falkner, and Karen would be some of my new favored characters in HG/SS. Simply because their design and the character themselves just stand out more to me. But I do have a likeness to their choice of Pokémon such as Karen's Houndoom and Gengar.
As for Ethan, I like especially because in my own opinion he is just one of the better male protagonist of all the games thus far.
However, I don't have a specific order in which I like these characters ... I just do. ^^;