Commercial cheat sheets can be useful at times. However, your own cheat sheets will be much more useful to you under exam conditions. It is advisable to extract relevant information from a commercial cheat sheet and place it into your own.

By writing up your own cheat sheet, it will first help you revise critical concepts as well as helping you to memorise key formulas. In an exam condition, a cheat sheet will be less useful as often top students will not or rarely use it, unless they need to confirm key numbers and equations.

Hope this helps guys

Although I cannot relate to VCE Physics in particular, it is not a good idea to use a commercial one unless you absolutely run out of time (which is what happened to me in Maths)

I find that by creating your own it forces you to revisit the whole course, read it all, extract the relevant information and also find what you get stuck on, this in itself is like revision.

In addition, by creating your own one, when it comes to exam time you may find you don't have to refer to it as often, saving valuable time, comapred to if you just used a commercial one.

Finally, many company cheat cheats contain stuff you don't need, or that you are already capabale with. My point is, since you are only allowed a page it is better to create your own to make it suit your skill level that is, put stuff you are not to strong in, and exclude topics you are already good at.

Hope that makes sense