Well, I think that from a mature point of view (ie everyone is mature enough) all votes should count equally.
BUT, as we know a lot of people, even regular members around here are not mature and may just vote negatively if there was a confrontation on IRC, on Messenger or even in real life, I think we can't really trust every vote.
For me, the best solution would be having a handfull trusted members chosen by the staff+elites. But since I know this won't be done, I vote for having this difference among voters,a lthough my vote will count the same as any spammer's, lamer's, etc's.
Well, I think it's just that I wouldn't trust my vote to some poeple around here, because I know they won't vote objectively.
But well, go ahead with the 2 - 1 system, it's the best option among the three, imo.
Edit: Just comes to my mind that that Marsh84721 (who is flooding the board right now) could be voting anyone