Quick detach scope rings

I have found some scopes that I really would like to have, but the minimum parallax adjustment is 50 yards. I would like to be able to switch scopes on my gun, depending on what distance I am shooting.

I would like to hear from those who have used the "quick detach" scope rings to switch between scopes. How repeatable is the zero when reattaching? What are the pros and cons? 
 
I use Leupold QRW and swap between night vision and my normal scope when hunting rabbits as the sun comes up. It works well for that. If I shoot at paper targets you can see a slight change in poi. 
I only do this on my impact and wonder if the slight change may have more to do with the machine accuracy of the rail on the gun. 
We are only talking a click or 2 on the turrets to zero
but it's not 'perfect'
Michael