Rings and bases, EAW hands down is by far my personal favourite! I only own two rifles now with EAW. One is a M-70 takedown built my Winchesters custom shop (many, many years ago). It is a two barrel set .375 H&H & .300 Win. Mag. I always regretted not having a third barrel in .458 Win. The .375 barrel has one scope a Swarovski D.G. model 1.5 to 5 & the .300 Win Mag. barrel has a Kahles scope 2.5 to 9 (I believe) it has there Christmas tree reticle. The Scope detaches almost instantly and the whole assembly has always retained Zero. I have never touched the scope adjustment since the day that I installed the scopes about 30 years ago I believe?
EAW rings and bases are not the easiest to install and if you are not up to it have a company like NECG (EAW dealer) do the installation, you will never regret the purchase or installation.