Samsung M71H 43" Mini LED vs Samsung M2EH 43" Mini LED vs Samsung QEF1 43" QLED vs TCL Q6CS 55" Mini LED vs Xiaomi S Mini LED 55" for bedroom binge watching?

I'm looking for a TV mainly for my bedroom and I'm completely confused after researching for weeks.

My viewing distance is around 6-7.5 feet:

- Around 7-7.5 ft when lying on my bed

- Around 6-6.5 ft when sitting up

Usage:

- Netflix, Prime Video, YouTube, Apple TV+

- Mostly binge watching series and movies

- Usually watch at night with dim lighting

- I care about picture quality, contrast, blacks and HDR

- I currently watch on a Galaxy Tab S9 FE+ and Galaxy S23, so I don't want the TV to feel like a downgrade in image quality

Prices available to me:

- Samsung M2EH 43" Mini LED = ₹30,000

- Samsung QEF1 43" QLED = around ₹35k

- TCL P7L 50" QLED = ₹38,000

- TCL Q6CS 55" Mini LED = ₹38,990

- Samsung M71H 43" Mini LED = ₹42,500

- Xiaomi S Series 55" Mini LED = ₹46,000

- TCL C6K 55" Mini LED = ₹55,000

My biggest doubts:

1. Is 55" too big for a 6-7.5 ft viewing distance in a bedroom?

2. Most of my subscriptions are 1080p, not 4K. Will 1080p content look bad on a 55" TV from this distance?

3. Is the TCL Q6CS really the best value here?

4. Is the Samsung M71H worth paying more for despite being only 43"?

5. Between TCL Q6CS and Xiaomi S Mini LED, which one would you choose and why?

I'd especially love feedback from people who have actually used any of these models.