Do you folks have advice on Night Force -v- Vortex? I'm not sure why Night Force has a really long scope, 12x55x56, that's a bit cheaper than a Vortex gen 11? That I believe is a 42 max length. Is there benefit to a 55 over a 42 for focal length or is it too long? Or what else should I be thinking about? I'm in a lead sled but I just do not know. As far as rings go, I really don't know who to pick or which to pic. All this is going to sit atop a Begara 6.5 Creedmoor. For all you long range guys, I really appreciate your time and thoughts.