I've narrowed my search down to these 2 masks. I've seen a few negative posts on the Big Eyes frame cracking but generally very good posts on the Mythos. Apparently Aqualung prohibits their dealers from selling on the web and if you do purchase this way warranty will be void. I have seen both masks for sale on the web for similar prices. Retail store ~ $70 for each, web ~$35 + shipping for each. Can anyone share any experience or suggestions on which way I should go? Thanks in advance for replies!