I haven't tried the KF94 masks, but I'm giving it some serious consideration, if I can't find a comfortable KN95 to wear.

I'm probably also going to stop buying through Amazon and go straight to the vendor website instead. Thanks for sharing links! I'm wondering if maybe half the bad reviews are from people receiving counterfeits.

Thanks so much for sharing what worked for you. :) I'll probably end up buying 10 masks from a few of these vendors and try them out to see what fits my face and is comfortable to wear.