These are the two best 7.8" colour e-ink tablets around. And here they are compared side-by-side in a fair bit of detail. The Boox Tab Mini C and the Bigme S6 Colour Plus.

There has been a lot of improvement in the Bigme E-Ink Tablet line up since last I tested them out. Here are my thoughts after trying out the Bigme S6 Colour Plus and the InkNote Lite. Both have the Kaleido 3 colour e-ink screen and a much improved software experience. But is there still room for more improvement?

Here's a link to the Bigme Store on amazon, which is great because you can always take advantage of the amazon returns policy: https://amzn.to/3qmFgZr However, I can't see the Kaleido 3 version on amazon yet, here it is in the Bigme store:
S6 color+ : https://store.bigme.vip/products/bigm...

Here's the full flavoured version of the Bigme InkNote plus: https://amzn.to/3rMA8hA
And here's the lite (featured here) https://amzn.to/3rMA8hA
Here's a link to the Bigme Store on amazon, which is great because you can always take advantage of the amazon returns policy: https://amzn.to/3qmFgZr
Here it is at the Bigme Store: inkNote color Lite : https://store.bigme.vip/products/bigm...

Tab Mini C at Amazon: https://amzn.to/3qRm32p
This is my new favourite small e-ink tablet!

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Check out the Tab X Amazon: https://amzn.to/3ye8R7M
And the Tab X case: https://amzn.to/3SV4Azu

Check out the Tab Ultra at Amazon:
https://amzn.to/3Ekl6DA
Tab Ultra C
https://amzn.to/3Ie5KSR

Kindle paperwhite bundle:
https://amzn.to/3T355pH
Kindle paperwhite device only:
https://amzn.to/3fCsXTy
Kindle (basic 2022):
https://amzn.to/3NK9uNl
Kindle kids edition. Great value as comes with a case and cover!
https://amzn.to/3zLb1x4

Kobo Elipsa 2E: https://amzn.to/3Wak5pb

Check out the new website at evaluateeverything.co.uk
(Links are affiliate links. Support the channel at no extra cost to you.)

Kindle unlimited trial.
https://amzn.to/3CqaRvA

Kindle Scribe Bundle:
https://amzn.to/3CmWBVr
Kindle Scribe Device
https://amzn.to/3StbrPI
(no extra cost amazon affiliate links)
Check out xtiles, the productivity and personal knowledge management app that I use, at the link below:
https://bit.ly/3B618K2
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Support the channel and learn more about e-ink tablets in some of my most popular videos:

Eink tablet buying guide:
   • The Complete E-Ink Tablet Buying Guide  
Top 3 10.3" note taking e-readers
   • Remarkable 2 vs Supernote A5X vs Boox...  

Get yourself a treat at no extra cost and buy through one of my amazon affiliate links:

Lamy EMR pen:
https://amzn.to/3tnIFpb
The Staedtler Norris Jumbo
https://amzn.to/3xur7tS

Onyx Boox sent me these three e ink tablets to try:
The Max Lumi 2
https://amzn.to/3NvAAXH

Note Air 2
https://amzn.to/3NtDegz
Note Air 2 Plus
https://amzn.to/3LAZc0N

Note Air 2 Cover - case
https://amzn.to/3Q6Cu2F
Third Party Case
https://amzn.to/3GYzXU1
Note Air 2 Plus Magnetic Case
https://amzn.to/3Q0cBBs

Nova Air
https://amzn.to/3mHpIKT
Nova Air C
https://amzn.to/3MuqzbG
Nova Air Case
https://amzn.to/3NqqWp8

Pen2 Pro
https://amzn.to/3kTznfW
Nibs
https://amzn.to/3vVOP1m

Cases for remarkable 2
https://amzn.to/3mnriB0
https://amzn.to/3kNkoEx
https://amzn.to/3PiBKar

Playlists for E-Ink Tablet brands:
Remarkable
   • Remarkable 2  
Boox
   • Onyx Boox  
Supernote
   • Ratta Supernote  
Quirklogic
   • Quirklogic Papyr  
Kobo
   • Kobo  

I love them all, I know which one I'd buy if I could only have more but...
This is more about your choice.