Should I get the Leupold Freedom 4-12-40 (or 50mm) or the VX3HD 3.5x10-40 (or 50mm)? It's not really the extra money that has me backing off the VX3, it's the CDL sticking out the side. I don't really understand what it does. I just want a clear scope for my aging eyes with a simple reticle. It's going on Savage .308 short action with EGW rail and medium rings and it appears (I haven't measured) that a 50mm would fit, but I've never looked through a 50mm so not sure if it's worth it.