I'm no bino expert but I have a pair of 15X70's from AOE That I like a lot.
http://www.aoe.com.au/binoculars.html
Theres better ones out there of course. One thing to consider is mounting them, & on what if you decide to. I ended up mounting mine on a EQ2. Not much fun hand holding bino's for any length of time IMO.
My first set of fairly big binos so I can't compare 'em to anything else, but I'm very happy with both the 70mm aperture & 15X mag.
Good luck with choosing.