Such a brave question for this forum.
MMM answer.
Take a crisp $20 from your junk-drawer and head over goodwill and find yourself a 24" CRT.
non-MMM answer.
Spend equivalent $ for both audio and video. I tend to favor audio > video, 60/40 or even 70/30.
65" is small. 77" is good. OLED prices are coming down. :)
I
almost suggested a ratio of investment in audio vs video, but was already probably being snobby. I purchased my TV used for $100 about 5 years ago. I purchased my audio system used maybe 12 years ago for ~$1,000. So 10:1.
An uncle told me I could just have his massive Yamaha receiver and subwoofer, and then I bought 4 used Bowers & Wilkins 303 and 306 (do not buy the 302s) bookshelf speakers for about $300/pair from Ebay, and a used Wharfedale center channel. This setup is crystal clear at any volume, transmits the sound of whispers and crunching leaves with creepy accuracy, and lets you feel it in your chest when the football player gets tackled. Best of all you can actually hear every word of dialogue no matter what else is going on. Is it overkill for a small living room? Maybe. But for audio clarity it's exactly what I like.
If that seems like a lot to spend on audio, keep in mind that your audio system will last a lifetime and will never be obsolete, but your TV might last 5-10 years
if you're lucky and don't get a defective one that lasts 2 years. TVs are disposable, and are built extremely cheaply.