I deer hunt with a Remington 7400 in .30-06, normally moving (I don't use treestands or that sort of thing) and normally in fairly rough terrain with dense cover. I prefer low-end (meaning cheap) variable power scopes for the type of hunting I usually do. I need low mag (3X) for fast target acquisition for that close range snap shot, and I need the 9X for those rare occasions when I spot the deer down in the holler or on the opposite ridgeline.
So why do I specifically like cheap scopes? The typical hunting season will have me getting rained on, snowed on, climbing in and out of rocky creek beds, up and down the occasional cliff face, beating my way through laurel thickets, tumbling down the occasional hillside... whatever. I'm hard on my equipment. Hell, sometimes I'll strap my deer rifle to a kayak and paddle some whitewater if that's what it takes to get to where I want to be - although for the last few years I've only got the 'yak out during bow season.
The point being that from my point of view, it'd be stupid to invest a ton of money in a gun and/or a scope that I'm just going to abuse the hell out of - especially when (in my opinion) if you know what you're doing you can get performance that's every bit as good from the cheap ones as you can from the high-dollar stuff.
My current favorite scope is a BSA I bought from Bass Pro two years ago for around $60. 3x9x50mm, waterproof, and as reliable and consistent as any scope I've ever tried.