My favorites for under $1000 and less than 500 yards hunting with the main focus on toughness:
SWFA 6x and 10x - I use the 6x on several rough use rifles. One lives on an ATV that's driven every day. Best toughness for the $. SWFA 3-9x42 Nightforce SHV 3-10x42 Nightforce NXS 2.5-10x32 or 42 - this would have to be used and less than most used ones sell for - would likely be the toughest of the bunch S&B 6x42