Yes, indeed there are differences and we aren't going to tell you which to choose or exactly how to brew your coffee. You need to get out there and experiment with but we can give you some little tips.
It's basically a plastic tube that is inserted into another tube with a rubber seal but with some almost magical powers that makes coffee taste different.
Chemex has been around for ages, it's iconic and let's face it, a beautiful can. Try as other wannabes might, they just don't succeed in either style or function. It's been a design that's gone unchanged since the 1940's and the truth is, whether you're serving coffee, water or presenting flowers, the Chemex brewer steps up to the bar and delivers.