God this thread has descended fast.
the notion that light bats cant hit sixes is utter utter tripe.
most batsman I know use 2.8-2.10, every single one of them can hit big sixes. I use a 2.8 bat, and topped the sixes chart last year in our 1s.
people are reading into bat weights and shapes way way too much yet again haha.
dont overthink it, buy something you like the look of, and you feel good using, then worry about your technique rather than the bat youre holding.