Re: Leica or Swarovski Bino's?
Optics quality is very good, I use both Sworovski and Leica. I find Leica to be a bit more robust in quality of construction; however, Swarovski has a much better warranty and servicing. Leica service is expensive and not extremely consumer friendly at best.
I think you need to really define your needs, there is a huge difference between 15x and 10x not only in power but size and weight. In the west I normaly use 15x Swarovski's to spot game and if I can switch to 8x for the stock.