Personally, I think the number #2 bull is a bit too posty on those back legs. Transformer looks better, as does the first bull. Honestly, the first bull would be my pick. They all look good because they're so fat, but he's easily the most well-balanced of the three. Maybe looks shorter bodied than the other two, but I think the pic gives that impression.
He carries his meat down well onto his hocks, is real deep through the guts and girth, straight over the top, short-necked and masculine-which is good. By the way, what's his breeding?