I'm planning to build a workbench/storage cabinet for my garage. Because of limited space (the width is only 420mm and the length 1,700mm), and the fact that it will only occasionally be used as a workbench and then only for mostly light duty work, I've decided to build it as shown in the drawing below rather than constructing a 2x4 frame as is most commonly done. However, I'm not sure whether to use plywood or MDF. It would need to be stronger than a typical storage cabinet.
Based on further research and comments, it seems plywood would be a better choice for the base of the cabinet/workbench and maybe MDF for the benchtop? The thickest available plywood where I'm at is 25mm which should give me the required strength.