I also look at:
1) How long has a company been around?...Sightron (Kenko) has been around for ages and they make their scopes. They are not outsourced to child labor camps in China or even Asia Optical (Scopro). While im no fan of Chinese glass the Athlon Midas TAC has been around a fair amount of time. It has a good track record but its also over $600 now. You wont find them for $450 anymore....Really love everything else about that scope though.
2) Eye relief....3.1-3.4 is a little tight but not horrible. Probably ok on most 30-06 rifles?
3) What else is out there that isnt made in China. Well, Natchez has sales on the Veracity in 3-15x50 FFP for around $450 and thats a bargain for that scope. No light weight but a good value for the coin. Those days might be gone but maybe not.
4) Mounting area available. How much room is between the bells and turrets. Do you have enough room to get the relief set comfortably? Thats part of the reason i bought 2 Murphy rails. 2 piece bases were not gunna do it for me. You can surely buy a fairly good rail for less than half of what a Murphy cost but most are 6061 or 7075. EGW and Hankins have some in steel for under $100. Neither offered a rail for my application though except in extruded 6061.
That mostly sums up why i mentioned the STAC line. It covers all the bases but its also not without its flaws. Packing a 3-16x42 or 4-20x50 FFP scope into a sub $500 package not made in China has to cut some corners but you know you got a solid company behind your investment. Ive got a 3-16x42 and 4-20x50 in duplex SFP. Im happy with them for what i paid, especially the 4-20 from Cameraland. I may get another in MOA-2 just for recreational shooting.
My main complaint is the windage cap is pretty stinking big. That might be an issue on some centerfires. Its not a huge issue in my application.