I'd appreciate some help on choosing a red dot sight - I'm getting back into shooting after 10 years of no guns.....shot competitively (local) for 30 yrs before that.....many more products to choose from now, but that makes it harder! The red dot will go on a .22 Ruger Mark III Competition Target pistol I don't need it weatherproof or able to withstand huge recoil... I do need it accurate. I see Aimpoint's claim that they are the only one accurate if the dot is off-center, due to their unique lens system. Is that true? does it really matter? How much do I have to spend for accuracy, and which brands/models would you recommend? Thanks!