i'm running the NF 7-35 MIL-XT on a Vudoo and Cronus BTR on a Kidd, by sunday i'll be running both on identical Vudoo's side by side after my second Vudoo gets here today. My eyes are getting kinda old, I wear bifocals, and i like the more sharper black reticle of the NF a little better. Others with better eyes might like (lighter?) reticle of the Athlon better. The APRS reticle of the Cronus vs the NF MIL-XT, edge to the NF, but i can switch between the 2 fairly easily but i do like the MIL-XT layout better. As far as glass clairty, the NF gets the edge also, but it's not extreme. As far as turrets , once again, the edge to the NF, they are more distinct in their clicks. As far as durability, i've had no problems with either. I haven't run either extremely hard to date, though that will change this year. Both have been run on larger caliber rifles besides the Vudoo's. The Cronus BTR was my first Athlon scope and i've been more than pleased ( my cost $1300 brand new) the NF is my second NF ( cost me $2800 new ) Is there a $1500 difference? If i want to be honest with myself, not $1500 worth. As far as the Vortex i've owned 2, can't remember what model the first one was, i bought it back in 15 from someone on here, and sold it 2 weeks later, wasn't impressed with it. Purchased a gen 2 PST from a vendor on here, i have it mounted on an AR-10 6.5 creedmoor. It's ok, but doesn't compare to the Athlon or Cronus in glass quality. I've got it sold to a fella that just purchased my RPR 6.5 a week ago. He'll pick it up in a month. Will i buy another? No, i'm just not impressed with the 2 Vortex's i've owned, or anything i read about them. Kinda like Ford , Chevy, Dodge. I've owned all 3, but have no use for a Ford, If i won one in a contest, i wouldn't even drive it, i'd sell it off and buy another Dodge, which i give an edge to over Chevy which i've owned my entire life for the most part. Love the dodge cummins diesel and use the shit out of mine. Next stop, NF NX8 4-32 MIL-XT if NF ever decides to ship them