Doug, with all due respect, zoom eyepieces are NOT long eye relief and the OP is not looking at being able to discern bullet holes at 600 yards. If he really is intending to use the spotting scope primarily for F-class, the Kowa 82SV with the LER eyepiece is the most suited for that task in his price range.
The neat thing about the 82sv is that you can change the eyepiece in 3 seconds. Also, the tripod mount is on a collar that goes around completely so it gives you maximum flexibilty in adjusting it when in position.
It's not the best glass in spotters, but it's way good enough for F-class purposes: reading conditions, scoring and so on. Then when you want to look at the Moon, or do digiscoping, you swap out the LER eyepiece and put in the 20-60X one and go to town.
Speaking of digiscoping, I got the accessory collar on mine, to which I attach the Kowa digiscoping adapter.
This is a very flexible unit.