Bob Barr, a Reasonable Choice?

Former Republican Bob Barr has announced his candidacy for President under the Libertarian Party.  He says he is disillusioned by Republican failure to curb spending and big government.  Well, who isn’t?  I’ve always thought we need a “None of the Above” vote on the ballot.  Bob is not the alternative for me, although I’m looking for a viable alternative to the three crazies running now.