I'm probably the "young" one on this thread, at 35, but I've been snowboarding for 20 years, and now own a pint (been riding for almost a month now). I LOVE it! It really is like snowboarding. I can't speak to the difference between the XR and the pint, as I've never ridden the XR, but the pint is pretty carve-y in my opinion. I get quite a bit of range out of 1 charge, but I'm also very light, so that makes a difference. If you plan to do shorter rides, you should be fine. I've gotten ten miles with 25% battery remaining, but I'm also just over 100 lbs so that makes a big difference.
I started with wearing full padding, and still wear helmet, elbow pads and wrist guards. The knee pads were actually hurting my knees, as it was impeding my full range of motion while carving. I don't really care if I look like a dork with full padding. It's worth it to stay in one piece! Had my first tumble yesterday, but so far have kept safe. I also DO NOT want to break anything or hurt myself. My mom has just recovered from a broken shoulder from a fall while skiing, so that scared me enough to be safe! As I saw in a previous post, if you're unsure of the terrain, get off and walk. My fall happened while taking a little dirt trail that started off downhill; it had smooth rocks/dirt that was somewhat slippery from the rain we've had. I wasn't going very fast, but pretty much knew right away the pint wasn't going to handle it. Fell on my butt/hip and will probably have a good bruise there. Walked back up to the main trail and kept on riding. :) Now I know the limits of the board!
I hope you buy a onewheel and get as much enjoyment out of it as I have, while being safe!