Do yourself a big favor; look through them side by side before dropping any money. You'll be surprised at what you see. Do your best to get yourself in the same situation as you'll be in the field. Don't compare them at a 100 yards to make you decision if you plan on glassing 600 yards.
The best money you'll spend will be on a GOOD tri-pod, not a $100 special at wal-Mart. You'll also be further ahead with buying a fluid head, Bogen makes a couple real nice ones, and you can get a 701 head for under $100