I think the ED50 is great for 1500 yards but in big country its just not enough scope.
I've used the ED50 in the area shown in the pic below on a few hunts for mule deer. This is near the Snake River and I see fellas from Idaho hunting here too.
Its over 2 miles to the opposing timbered draw. With 30x you can see critters but its tough to evaluate them. And the opposing draw is "close" compared to much of it!
Luckily I shot my buck at 50 yards.