Cyber Monday is here, and if you've been waiting for the perfect moment to upgrade your TV, now is the time. I review TVs for a living, so I can tell a good discount from a bad one. The best Cyber Monday TV deals feature some of the strongest savings of the year on my favorite displays from Samsung, LG, TCL, Sony, and Hisense.One TV deal I keep telling friends about is the Samsung S90F. The 65-inch model is sitting at $1,398, which is excellent for a TV with such impressive contrast, color accuracy, and ove ...