Whether you’ve been eyeing your first 4K TV or thinking of trading up for a newer model, this year’s crop of Prime Day television deals is shaping up to be an enticing one.  If you’ve been pining for an OLED 4K TV with deep contrast levels and inky blacks, Amazon is serving up a pair of LG models from the C8 series. Boasting some of the lowest prices we’ve ever seen for these OLED sets, these 55-inchRemove non-product link and 65-inchRemove non-product link 4K TVs are sure to sell out fast. (Update: Sold out, although you can put your name on a waiting list.) We’ve also spotted the 65-inch Sony XBR65X850FRemove non-product link, a 4K LCD TV that boasts HDR support, a bright IPS display with solid viewing angles (although no local dimming), four HDMI inputs, and the ability to install such streaming video apps as Netflix and Amazon Prime Video via the Google Play store.  Meanwhile, it appears Amazon has price-matched a recent Dell.com deal for the Samsung QN75Q70RAFXZARemove non-product link, a 75-inch QLED (the “q” refers to quantum dot technology) 4K TV with full-array local dimming for improved contrast. With its new price tag, the QN75Q70RAFXZA is now at an all-time low. If y...