My C3 had been on the wall for fourteen months when the C4 came out, and I almost talked myself out of upgrading. I shouldn't have — the brightness bump is the one OLED improvement I notice without trying. Not in a dim room (any OLED is great in a dim room), but in our living room at dinnertime, with the kitchen lights on and the sun setting through the west window, the C4 holds onto highlight detail that the C3 was already starting to wash out. That's the upgrade. The rest is iteration.
The panel is the OLED evo at 144Hz, driven by LG's Alpha 9 Gen7 processor, and the things you expect from an OLED are all here: pixel-level black control, viewing angles that don't quit, motion handling that nothing in the LCD world can match. Watching the same Premier League match on this and a friend's mid-range Sony LCD was the demo: the ball is a ball on the OLED, and a smeary oval on the LCD.
Where the C4 genuinely earns the price tag is PC gaming on a 65-inch screen. G-Sync and FreeSync Premium are both there, the panel runs at 144Hz, and my desktop drives it without complaint over HDMI 2.1. I don't typically game on the couch, but plugging a PC into a 65-inch OLED is a thing you should try at least once. It's absurd in the good way.
The asterisks are the usual OLED ones, and you should take them seriously before buying. There's no matte coating, so in a bright room with a window behind the couch you'll see your couch in the TV. Burn-in risk on static logos isn't zero — I run a news channel as background during dinner and there's a permanent slight ghost of the CNN bug on a full-white test screen, though invisible in actual content. If you watch cable news six hours a day, get a Mini-LED.
webOS is fine. The home screen has ads, which I hate. The remote is the same chunky thing LG has been shipping for years, which I'm fond of and my partner finds enormous. Five years of software updates is a real promise — my old C9 stopped getting them after three, and on a $1,500 TV that should be the floor not the ceiling.
The pricing is the bit that requires patience. The launch price of $2,699 is laughable; the C4 was under $1,800 within six months and has been under $1,600 at Costco. Treat the MSRP as fiction and wait for any of the major retail holidays. Sub-$1,700 for a 65-inch OLED is the price-to-quality ratio that makes this the easiest OLED recommendation in the lineup.
The places I wouldn't pick the C4: a bright sunroom (the QM8 or U8N is brighter), a film-purist setup where you specifically want maximum HDR brightness (the G4 or A95L still beat it), or a budget under a thousand dollars (the C-series isn't there yet). Everywhere else, this is the TV.
Verdict: Buy the C4 65" if you're replacing a TV from 2019 or earlier and you watch in a normally-lit room. Pay no more than $1,700; the launch MSRP is a number for spreadsheets, not buyers.