Quick detach rings for the most part, are a fickel mistress. Unless you get some that are torque downs, like what the military style aimpoints have, you'll have trouble finding a set that will return to absolute zero everytime. The ones that do Badger Ordinance, Nightforce ect, cost a pretty penny.
Now if your just wanting to take the scope off in a hurry that is a different matter. But it will usually result in having to re-zero the scope the next time you mount it.