The Forums on
www.OpticsPlanet.com has great reviews and no apparent brand loyalty. Anyone can post and Joni, who does the spotting scope testing, comparisons and reviews will respond. I bought a scope they recommended based on the low weight requirement for backpack hunting.
A Kowa 602 with the TE-9z 20-60 eyepiece. Whole thing under 3 lbs for around $750.
Can't beat a Swaro or Leica for clarity, but sometimes that is not the only requirement to consider.
Scud