Hi Ted,
I have the 15x70s from AoE, and while they are great quality, I can tell you that they are difficult to hold steady when looking at the sky. I used to think, "Hey, if I can bench 130kg, surely binos will be easy to hold...but i was wrong. Anything above a 20/30 degree angle is difficult. The view is great with them, but shaky. I wouldn't recommend them as a first set of binos. I'm sticking them on a tripod now.
10x50s should be fine, I think, but someone more in the know, I'm sure, will advise you soon.
Oh, and welcome to IIS!