Had a Dukes Pro Century jumbo shaped bat. Was around 2'10 and a little bottom heavy with a big oval handle. First time I used it I gave some trundler the charge. He push it wide of me and I lunged almost slicing across the ball, only to see it fly 80 yards for six. Scored 700 runs @ 70 odd with it before the handle went. When people say they don't remember you hitting the ball that hard you know you have a good stick!.
I've been lucky to not have many poor bats. Managed to lose a very ordinary Hunts Mettle, had a GN Millenium that was a bit of a twig and I've been done a few times on pickup/weight but rarely performance. My GM Icon+ at the moment seems as good as any bat I've had.