I had a XP-Pen 22 HD (same technology as the 22E) but I sold it after trying the 15.6 for a bit. The pen on the 15.6 (same as the one you have) is way more precise and you can draw wih a very light touch, so it feels way more natural, while I had to press very hard to get a line like I wanted on the 22HD. It's just outdated tech. Having a big bright screen was absolutely better for coloring and to have a nice view of all the picture though. So, if you want to get a 22 model, I really advise you to get the newer version, it's called 22 Pro, it has a pen wih 8k+ pressure levels and it feels great to draw, just like the one on your 15.6.