You won't find a 75" TV for under 10k with decent image quality. You certainly won't find a 85" TV for under 10k either. If the size of a display is what you are looking for at under 10k, then your only choice are UST projectors - which you shouldn't expect a good gaming experience on since they usually have quite high input lag.

Since you have up to 10k budget for audio setup, forget soundbars entirely. Buy a decent receiver like a Denon x3800H and a pair of bookshelf speakers, add and build it into a multi-channel surround setup over time.

You won't get an OLED or QD-OLED for RM10k+ at 83" screen size, that's impossible even if you go for second hand market.

Samsung Q70d
- Edge-lit LED LCD TV with no local dimming so don't expect inky blacks, despite using the "quantum dot" moniker its color gamut and volume is actually pretty low.
- Peak brightness capability is only ~500 nits, this is only half the minimum HDR10 standard of 1000 nits! HDR is basically useless on this TV in any room, dark or bright.
- Its upscaler is also pretty poor for 2024's standards.
- Very low input lag, great for gaming.
- Tizen OS actually is surprisingly pretty good these days.

Sony X90L
- Mini-LED lit LCD TV with local dimming, so it does achieve some pretty impressive (for a direct lit LED LCD anyway) contrast ratios. But blooming can be visible in a very dark room since there aren't a lot of LED zones.
- Peak brightness can hit 1100 nits, hitting the required standard of 1000 nits from HDR10. This TV is not a light cannon, but is bright enough for most people's rooms with some curtains.
- Good color volume coverage and gamut achieves >90% for DCI P3.
- Still the industry's best upscaler for low resolution content.
- So-so input lag figures for 2024 standards, but still good for gaming.
- Android (GoogleTV now) is becoming more and more trash with each update.

Between these 2, I'd suggest the Sony as it's a more well rounded TV than the Samsung.

You want 85" at 10k+/-, there's not else better than the X90L at this price point.

Hi,

I suggest attend a demo yourself for Sony and Samsung. Some differences between x90l and 85d:
- Sony dimming has superior shadow details but at the expense of blooming though this generation of Sony's blooming control is better than previous generation
- Samsung has less blooming but at the expense of shadow details
- Sony has better upscaling of lower quality video and motion compared to Samsung
- Samsung will appear higher contrast with better blacks
- Sony has more natural color while Samsung is more saturated and colorful
- Sony and Samsung has narrow viewing angle..so sitting far away from center position , color and image will appear washout

Some of above differences will be more prominent in a dark room but if you watch with lights on in a living room, actual perceived differences may be minimal.
Also as both manufacturers have different approaches in designing their TV, some of differences like color, blooming control, shadow details is up to your personal preferences.