I used a cheaper pair of Nikon zoom binoculars on a deer hunt in Utah once. I was not impressed at all. For the OP, are you going to use those 15X binoculars as a spotter like they do when hunting Coues deer down in Arizona, etc.? If so, you'll want to upgrade to better glass to avoid a lot of eye strain and headaches. If you're just using the glass to verify something you spot with your eyes but not as spotting glass, you might get away with less expensive glass.