Which bats man can hit more sixes in the innings?

Jayasuriya, Afridi, Gilchrist and Cairns of the past era but now the young ones are coming through and hitting some mive sixes. Most notably Brendan McCullum, AB De Villiars and the powerful indian batsman Yuvraj Singh. Yes I agree I just used 3 of the top six hitters from the IPL and World T20 cup but these boys can still hit many of them in one day internationals and test matches.