Yes an no, custom is great but you have no idea what its gonna be like until you try it on when you get it. Various mask have various fits. you cant say i want this model, and your head measurement doesnt fit inside the shell.... ii tried on the one i was thinking, saw how it fit as is and was able to tell Ron, this mask, retail fit, bits great but leaves some space in the cheeks, so when you make it, buff up that area a bit so its more snug, ect. I had issues with my measurements NOT matching depending on which of 3 measuring rubans i used... soo. using that was very useful.
One thing I found is that with my dangler, I place pass it in the ear holes because the mask is so tight back there that -any- strings bites into my ear. Had to secure it to the cage, which is a nono but was my only option.