Good choice; mine too. I did have one frustrating issue to deal with and with the help of a poster got it solved. I couldn’t stop my laptop keyboard lights from coming on. As for boots; from the start of the OS chioce it takes 12 seconds. Windows 10 is struggling to boot in under five minutes. I very seldom venture into Windows any more.
The same here. My Windows 8 was outdated, and I tested all kinds of distros for 9 months. When I heard of UM, I tested it, and knew I had found it. No issue at all, everything works great, and has got everything what I need. Never had a moment of doubt since then. I don’t miss Windows at all.