Just got a 3x9x42 a couple of months ago !! Forgive me for not being a scope expert (I'm more of a bowhunter) !!
But I really like the scope ! It's the brightest scope I have used and the adjustments are crisp and precise ! I don't know what parralax is.....but if it has to do with the dial on the back of the scope.......it makes a big difference in low light !! I can make adjustments an see clearly way past legal shooting hours ! The only thing I wish mine had......is the crosshairs that adjust to the power setting ! My friend(got me to get one) has a vm/v in a 3x12x56 and his crosshairs are easier to see at higher magnification and low light conditions !! Mine work......his are just easier to make out !!
Hope that helps......but like I said ...not a knowlegable scope person !! I hope this is the last one I ever buy !! Good Luck !!