Well the main difference between a good and a cheap tablet is the pressure points and the durability. With a more expensive tablet comes better quality, more pressure points mean more ease to draw.
I have had a bamboo for a while now but i had to let it go for a while as i am gonna buy an intuos soon enough.. But since i dont have it i have had to use an old cheap tablet with no brand or anything and it simply doesnt feel the same, The pen is atleast twice the weight, it also uses batteries, it is less confortable and overall i am not able to pull off a good trace as easy as i could before.
I recommend you to look at the reviews on said tablets.
On the first one nobody seems to ever buy it, it has 1 / 5 stars. The review makes it look as a tablet that probably is of almost no use, and i dont think the flex part of it is of any help, more like it can just make it simpler and worse.
The second has better reviews overall but in my opinion it looks to have a heavy pen due to the use of batteries and a small working area that might not be essential.the last
the last one i havent found reviews of, but it seems to be the same as the second one.. but with a mouse??... wut..
Well thats as much as i can tell. If it was something for me i would rely on a better known brand like wacom, Search for reviews on those tablets and judge for yourself..
Reffer to this video for some other info :3
https://www.youtube.com/watch?v=1pqmDjGQmJA&list=PLNaAcA0yN3KYup8psSoyOd_mKW27av89V&index=87
*potatoes away*