Which Tablet would be the best for taking notes or writing reports in school, parks or subway?
The Ipad with retina display... with its pen and $30 keyboard
The samsung note 8.0 cheap with the pen
The samsung note 10 with its s-pen???
Or something else?

I'd say go old school and use (paper) notebooks. They're less problematic

Stick and dirt.

What are you gonna use it for in specifics?
.EDIT; Read the OP.

iPad Air with the Logitech Keyboard
.

but tbh, paper and pencil >>>>>>>

Laptop or classic pen & pencil >. Although, I have seen people in classes with some pretty cool tablet setups with pens and whatnot.

Go for the iPad for sure.

For note-taking go with the basics good ol' fashioned Pencil and Paper. But what's your issue with pens and pencil?

Paper > Laptops >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> Tablets

I just want something to write my reports mainly while am not at home or in a desk, which laptops and desktop usually require to be siting somewhere for best comfort.

I'd say go with just taking notes on a mac book or just pen/paper but it specifically has to be a tablet then pick the iPad air. I use it for some of my classes and it works wonders

Get an iPad mini and then download notability app, can write notes, can write notes over a PowerPoint/PDF and can record and you can highlight a piece of text when listening back and it will play just that part

Paper
or just record the lesson

You require a desk to type on a tablet even more than you do on a laptop though...

Ipad mini. Has the best apps. They gave us some in school.