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Bow or gun hunt?
Elevation? Terrain? (open or in the timber?)
How much will your other gear weigh?
The biggest things to consider in general when hunting out west are the distance you need to see (in other words, are you using them in place of a spotting scope), and the weight of the binoculars. Trust me, a 1/2lb in wt makes a big difference at high altitude.
I'd lean toward the Swarovski SLC's in 8x40 for an all around binocular out west. should be able to pick up a pair used but in perfect condition for around $750. The Swaro 8x40 EL's would be the cat's meow, but they're around $1300 used.
For archery hunting only where you can get by with smaller objectives and lighter weights, I'd go with the swaro 8x32 SLC's. I love mine, and paid $550 for them used but in perfect condition.
I've used other people's spotting scopes out west scouting, and I don't think I'd even waste the few hundred dollars on a cheap one (including Leupolds). They aren't any better than good binoculars, and are just about worthless when using them in low light (when game is actually out in the open). Now the high dollar spotting scopes are FINE, but at around $1200 for a used, low end Swaro, I just make due without (since I'm generally bowhunting)