Your choice?
A Jeb Bush/Condi Rice ticket would be my choice for two reasons: I really do think it would be great for the country and I think it's an unbeatable ticket.
See RayChuang88's post -- it's post #10:
http://www.freerepublic.com/focus/f-news/1361287/posts?page=10#10
for the reasons that Jeb would be an excellent candidate, add to that brilliant, stylish Condi pulling the votes of women and blacks, and we'd have a landslide.
Frankly, I can't think of anyone else who would come close to having that high probability of win.