The design of the mask can have an affect on comfort of vision and sometimes of wear. There are purge masks, masks that allow speach capabilities, multi window masks, prescription masks. I prefer the purge masks but thats just me
I wear the Sea vision 2000. Itís incredible! I dive mostly in CA and I have always thought of CA diving as "green and Gray" Not with that mask. I canít believe how much color there is down there. I havenít been able to make it out to tropical diving yet but I have a feeling if it makes CA look tropical I am going to be pleasantly surprised!