Once you have bought your paintball or airsoft goggles, maybe you need to start to think about looking after them. Do you buy a protective case, you will need some cleaner, maybe a micro fibre cloth so you don't scratch the lenses. Talking about lenses, do you play indoors, outdoors, in the woods, in the winter or summer. There are replacement lenses that can cope with different light situations.
In the woods, yellow lenses are awesome but they don't work in a dark indoor environment. Change your lenses and make your goggles personal to you.

Anti fog lenses are an absolute must, make sure they are dual pane thermal to stop fogging, but if you are a portly fella, then you may want to look at a goggle fan just to make sure you have a clear view all day.