I think Dave did well. Nick started very well but fell towards then end. Gorden was just a prise plum and if I was a Labour supporter I would get rid of him as leader as soon as the elction is over.
The reason Clegg won is because he answered the questions directly, and knew it figures apart from his "squillions" blip.
The only reason why the Lib Dems wouldn't get in isn't because of a lack of sensible fiscal planning or policy, it is because people like us, no matter how exceptional the leader, will not vote for them unless we ABSOLUTELY had to. Two Gordon Browns against each other = Clegg wins the election. Cameron is a slightly better speaker = Cameron win, because people would rather vote for an average Tory leader than a very strong Lib Dem.