On the 06 D22 I had as a work truck a few years back the boss put ARB canopies. IMO only good thing was the lift up windows all round.
Bad points were locks constantly stuffing up, even barrels coming out completely; handles stuffing up, which lead to windows being broken when the boys turned the handles and one stayed closed and one opened! It was amusing watching the stunned looks as they were surrounded by tiny pieces of safety glass with the handles still in their hands but lol.
I have a Carryboy canopy on mine, Sport one, older model with angled sliding side windows. Great feature with the "Slam Action" closing rear window, look better than the ARB canopies. I think now you can get them with lift up side windows. Compared to the ARB canopies I can't fault my Carryboy.
Hope this helps
Sorry to hijack, but anyone know where to get spare keys for the Carryboy canopies?