Friends

Can you classify these adjectives into those with positive, neutral and negative connotations?

cool, sincere, clumsy, dull, tactless, intelligent, adventurous, sexy, 
fun person, optimistic, romantic, mean, vain, wise, competitive, creative, generous, imaginative, snobbish, tactful, stubborn, impulsive, serious, ambitious, cruel, lively, hard-working, sympathetic, naive

Which of this qualities is more important for you in a friend?
Which of this qualities is more important for you in a partner?