I am ready to purchase a scope for my 338 Lapua improved. Is there any reason not to purchase the Mark IV 6.5-20 for long range applications compared to comparably priced scopes? Have thought about the NXS, but weight and price sway me back to the Leupold. The Zeiss Conquest and Sightron were considered, but I like the aspect of a 30mm tube with solid/audible clicks that the Mark IV offers. I currently have an IOR on another rifle which I love, but that rifle is not braked, while the 338 is ---- and recently learned that IOR's can fail with brakes. Any input is welcomed.