This year we're seeing some great prices on OLED TVs, which is good news because it's a seriously impressive display technology, but one you have to pay a lot extra for. OLED stands for Organic Light Emitting Diode, and the big difference between OLED and standard LED TVs is that there's no backlight involved; each pixel emits its own light, and when it isn't emitting light you get a perfect black. OLEDs also tend to be lighter and thinner than LED TVs with better refresh rates.
There are downsides, though. OLED has limited brightness (up to 1,000 nits) which means it's not so hot in a brightly-lit room, and the smallest OLED TV you'll find right now is 48 inches, so forget about it if you're after a smaller screen. But if you can live with the drawbacks you'll love the sheer visual quality on display, and while you'll have to pay more for it, right now's a brilliant time to get OLED in your life for a more reasonable price.