Funny enough, my choices for guys and girls are both girls. For women, Saeko Busujima from Highschool Of The Dead, and for men, Blair the Cat with her gender switched in the Book of Eibon from Soul Eater. If I had to choose a guy I think itd be Portgas D. Ace from One Piece.
Can't say yet for certain, as I have a lot more anime to see. Yes, many more. But for now, the best looking male character that I've seen has to be Spike Spiegel from Cowboy Bebop. Between his hair, laid back dress sense to his eye color, that's one fine space cowboy. Coming in second place is Roger Smith. Very sharp dresser, with his jet black hair & sleek watch no gentlemen should be without.
My choice for women is a more difficult tossup, but I really have an attraction to Hitagi Senjougahara from Bakemonogatari, Mirai Kuriyama from Beyond the Boundary, and R. Dorothy Wayneright from Big O.
Hitagi Senjougahara has always dressed well, but in certain episodes she really outdoes herself. Her style is unique, and I absolutely love it. Her long hair is also very nice. Extremely beautiful body to top it off.
Mirai Kuriyama is still a character that is new to me, as I've only seen 4 episodes of Beyond the Boundary. That being said, I love her oversized school uniform, thick red glasses, and short bushy pink hair. She's very pretty in my eyes.
R. Dorothy Wayneright may be a android, but she is still gorgeous. Her black elegant dress, clean cut red hair nicely compliment her chalk white skin. She may be too perfect in some respects, but I adore her nonetheless.
Has a good HEART, smart ,cool, mature but still a bit childish, values pride and honor which is almost nonexistent in today's day and age, great hair, great body, great voice and has an impeccable fashion sense.