I have a Samsung galaxy tablet, it was small enough for me to carry around and I used an app called art flow, I paid for it to get all the layers. Generally it's not bad. It takes some getting used to and depending on your program of choice it works well. However runing large programs that are desktop or laptop like photoshop you'd need a tablet that can run those. The galaxy I used joint pro and the bamboo stylus . Sometimes a cheap one for wide areas of flat coloring.
Currently I own surface pro 4 I have to say I love that thing. It comes with a pressure pen. The only thing is the graphic card may cause issues unless it's upgraded or updated on the Windows. But I run cs 4 on it and I donor have any issues other then it's hard to see the entire program unless you zoom in. The drawing area is fine. The surface is very smooth because it's a glass area. The pen and tablet work very well I do not experience any gaps when drawing or coloring. I enjoy mine.
I've used a bamboo tablet that is connected to but not like the clinq that shows the desktop on the tablet itself which is amazing and if I had the money I'd buy one with a new computer.
Drawing glove if you are unable to turn off the palm reading in the tablet a cheep way is to buy the winter gloves the cheap cloth ones cut the fingers off leave the pinky and it won't read your palm.
Btw the surface you can load to a cloud for more storage and just like the apple you can pick that image up to any computer. Helps me at times since I use the laptop as a finishing for text.
hope that helps a little I am no expert just my experience with these 