I've never even looked through a fixed 6x but as I've said a bazillion times, I keep all my scopes on their lowest power in case of a close shot. There's plenty of time to crank it up when one hangs up way out there.
Most of my scopes are 3.5-10's but I do have a 1-6 that shows me 6x is plenty for a 400 yard shot but my concern is as I said, up close, regardless of what terrain you're hunting in.
