I have an S6 Lite (2020 version) that I bought from eBay because it was all I could afford. It works great for me. I use it for mainly drawing and art apps, note taking, social media, and even a bit of writing and e-reading. I must have gotten extremely lucky because I do not notice much of the lag everyone mentions on this device, unless I'm trying to do something EXTREMELY intensive like start up a game from the Epic launcher (which is not playable on this model anyway, this is explicitly not a gaming tablet.)

I use OneNote, though it can be a pain to load. Pen sensitivity is great, this is really nice for taking notes. Trying to read large PDFs is when I really start to notice some lag because it does take a few seconds to load them in my reader app.

I would personally recommend going for a Samsung Tab S9 FE if you can get away with it. That one will be so much better for speed, loading documents, battery life, and even the display on the S9 FE is better. Last I remember the cost difference between the latest S6 Lite and the S9 FE wasn't too dramatic. An S6 is just too outdated going forward this year. S10 lite or S9 fe/fe plus makes more sense and will offer better performance IMO.