Most Helpful Guy
Physically: not ridiculously out of shape or unhealthy. A feminine jaw line. Nice eyes. Long hair. A sense of style is very attractive as well. Don't really care about much else physically.
Mentally: intelligent. Confident. Ambitious but altruistic. Witty but not too snarky. Pensive. Optimistic and not too cynical. A dreamer. Hardworking (to match the ambition). Open with her feelings, I hate having to pry. Not very religious. Embraces her individual quirks.
I think that's most the stuff that would really stand out for me.