I have a redfield revolution 3-9 x40, it's magnification adjustable
I've only used it (a year) on my cz 455 .22 rifle so it hasn't really seen hard use.. but I can tell you that it's a pretty quality scope for the money, the glass is clear, does not fog, good low light visibility (shot at dusk in the rain, can still see well at 200m) I will say though that adjusting the magnification does seem to cause a shift in zero ever so slightly... (maybe it's just me, but I did this at 100 m so I don't think it's the parallax) and the turrets do not feel very positive and 'clicky' which makes it feel a little bit cheap in that way
overall I'm pretty happy with it considering the 220+ ish price tag... (i got mine in the states)
overall it's a nice