None of the two as the answer is combatibility - that will determine the length, enjoyment and success of any relationship BUT damn for males looks is a big thing when looking for chicks!
Character or looks? I'll go on character, although we all know that population still consider the outside appearance, character is something that will not fade unlike beauty.. even with high technology
Looks play an important role to establish that initial attraction... But if you're looking for a long term relation, character is more important!