few monts ago bougth a vx3 4.5_14x40mm B&C 1" tube, i wanted a decent low light scope using the lower mag. for low light and the higher for day light shooting, well long story short, didn´t like it.
next, changed the scope for an other leupold, this time a vxr 4-12x40mm #4 ret. 30mm tube, this scope have better optics than the previous one.
i don´t know if the 30mm tube have something to do or just the vxr have better glass than vx3