I own a VX3 and a 5 in 3.5-10 and 2-10. I would always pay the money for the 5. I like my 3, I love my 5. VX5 is on a 300 win mag. VX3 was on a 300wsm before I switched it for a Nightforce. I still have the VX3 that will probably be going on a 350 legend for the kids gun out to 200 yards.