I bought mine about a month ago and have about 40 batteries through it. I wasn't sure how I felt about gliders before, as this is my first, but I couldn't be happier with the umx radian. I couldn't believe how it will just stop and float when headed into a light breeze. It is very quiet, batteries are cheap and give long flight times...can't say enough great things about this little plane. I'm seriously considering getting the full size radian now (I say seriously considering, but it's almost a certain eventuality).
I would tell you to be careful about taking it up too high, but you likely won't be able to resist. I've had several very close calls where I really thought I wouldn't be getting the plane back. I once lost sight of it for a good 20 seconds as I frantically scanned the sky for movement. Finally, I saw it tearing across the sky in my peripheral, a tiny spec in a completely different part of the sky. The profile is so thin that it can be visible or not visible almost at will it seems. It's all pretty terrifying, I know your going to love it.
This thing will make a great plane for you to practice orientation, if you need to( I know I did), because it's moving so slowly that you have ample time to give it the proper inputs. I did had to use my own Velcro because the supplied stuff wouldn't stick to the foam, I would get a bit to take to the field as you'll likely need to replace yours also.
Let me know what you think after you get a few more flights on it -Coleman