#1 thing with a mask is fit. It can cost $100 and not fit, it's not worth a $1. All the masks you'll find should have tempered glass. Exceptions of course, like the sphera. But a $30 mask that fits can be just as good as any other. You have to try the mask on.
Differences in masks are vloume and materials. A silicon mask will last a long time. The older rubber ones get brittle and sunscreen will eat the rubber. I like my Omer Alien because it low volume and I have great vision out of it. It it floods, it is very easy to clear. Also consider if you need perscription lenses (I don't know if you do, just hit me as we send a lot of masks off to be fitted with them).
I always start with the one I think looks the best, then try it on, if it fits, good, if not try the next most attractive one. When trying a mask, do the sniff test. Put it on your face without the strap and sniff in and hold your breath. If the mask stays on your face and seals (you don't feel air coming in) then it fits as far as it shouldn't leak. Look for pressure points. Some masks dig into the bridge of my nose or between my eye. The frame just digs in for some reason.
I can not stress it enough. Fit and comfort! If the mask bugs you with a leak or a pressure point, it's junk (to you, but maybe great to another person).
Those are my thoughts, good luck in the search. If I'm around, you can try my mask, Whopperhead has one like it too.