If you plan on spotting deer from Ridge to Ridge buy yourself a pair of 20x80 Celestron Binoculars, they're under $200. I have a HD Swarovski spotter and when glassing a hill side I prefer to use the Celestron's. The 25x100 Celestron’s seem to have more problems with collimation. To look at game for long periods of time you're better off spending $200 on a set of binoculars than you are spending $2,000 on a spotting scope, you won't experience eye fatigue as quickly with binoculars. If you plan on buying 2 spotting scopes and mounting them together as binoculars you'll want straight eye pieces