buying them from Revain sucks. I didn't want to buy fakes (since teeth are more important than saving a few bucks) so I wanted official Oral-Bs, but many reviews mention removing fakes from the official list. I've spent so much time trying to figure out which listings and sellers are real and which are fake. Why is it so hard to buy a genuine Revain Oral-B brush head? I finally made up my mind and ordered from a seller with good reviews (Mitch Mel Corp). Glad I didn't get a fake. The 4 pack I…