If you already have a pc that handles well the software you need, like photoshop or sketchbook you could try a Wacom Intuos
(Usually they also include some bundled software with it depending on the model you choose)
I have the small version Intuos of the older model that I use for some photo editing stuff but it works fine also for illustration/drawing, if you want the bigger model the medium has the same specs (levels of pressure, pen with no battery and interchangeable nibs, bluetooth ecc).
But as @kreestuh said, you have to look up at the screen while you draw and it takes some time to get used to it (I needed a week or so to get comfortable).
The Cintiqs are essentially the same ting (same pen technology ecc) but with an integrated screen, the screen is really good and the color accuracy out of the box is usually good too. There are various models, the base one is a 13" FullHD that costs around 700€. (other models like 22, 24 and 27 inches are really expensive)
There is also a model of Cintiq 13 tablet that has a full laptop integrated, if I recall correctly it has a mobile Core i7, 8 gigs of ram and a 128G SSD and Windows10 but this gets expensive too.
If you want to try the base version of the Intuos it’s around 70€, and in the black Friday on amazon it usually gets some discount.
All the wacom stuff I tried is very reliable and well made, the drivers usually work great and the experience with the pen and responsiveness is very fluid and snappy.