I despise how everyone asks that question as if those are the only two options. Especially since the best, in my opinion, redheads are always left out. So neither.
What Girls Said 1
Guys have different preferences in terms of hair color, so there is no one answer you're going to get here. But I don't think ANYONE is going to like damaged hair. So even though you miss being blonde, it's probably for the best if it was killing your hair. You don't want to end up bald, after all; it's a pretty hard look to pull off.