I always liked green eyes :)
hazel eyes are SOOOO DREAMY!
I really love green eyes :) And Amber eyes!
I like all of them. :D
Onbthe subject of eyes I love dichromitism(that's what I think it's called don't really remember) or mismatched eyes. My favorite combinations are sky blue and ruby red, enderman purple and emerald green, and finally green and pink although I've only ever seen pink as a colored contact. Color contacts are a whole other conversation though.
On guys I think that green or brown eyes are best, for girls I personality prefer looking into hazel eyes when talking to them