Well, the Onyx Boox M series is beginning to come in and get reviewed by MobileRead users:
https://www.mobileread.com/forums/sho...127120&page=19. A quick Google search didn't find any current "official" reviews, although it did find Sarah's thread in Tablet PC Review
http://forum.tabletpcreview.com/asus...-boox-m90.html, which is interesting.