I've been comparing these two models online, and they seem almost identical in features. But the C1 is around $500 while the F1 is closer to $800. This will be my first 2160p TV. I currently own a Vizio E series 50-inch that I've had a little over 4 years. I've been very happy with it, but I'm ready to get a bigger screen. I've also considered the TCL 6 series, but Vizio seems to come out slightly ahead in all the reviews. Any thoughts would be appreciated. Thanks!