I have seen reports from not totally impartial sources putting Leanne Wood or Alice Hooker-Stroud as the top performer on the night. However, those both placed Kirsty Williams in second place well ahead of the Conservative leader and UKIP. My Facebook friends give Kirsty top spot of course, so a spot AV count would make the Liberal Democrat leader the overall winner!
The Western Mail, which for a long time has leaned towards Plaid Cymru, has this assessment of Kirsty's performance:
The Welsh Liberal Democrat leader has both an encyclopaedic grasp of policy – an advantage of having been an Assembly Member since day one of Wales's devolution story – and plenty of passion. She cast herself as someone who is good on detail but who also brims with anger at failings in the system. Things did get tricky when she attempted to skewer Mr Gill over a vote in the European Parliament and he said he was not a member there at the time but this did not sink her performance.