Been offer brand new tactical
Both 15 and 25 at knock down prices
Anybody use them in the field extensively
Who makes their glass ?
Or are they like nightforce ?
I know they are mc approved

Amazing scopes, a step above Nightforce. They have several different reticule. Get it if you can.

I have been informed since starting this post that the3 company stopped operating from the US and now runs from Canada for whatever reason

I am worried about long term warranty and resale value

Can't go wrong with Nightforce or Schmidt Bender. I have both and they have the best turrets I've used.
The glass in S&B is amazing. I've shot 4 marmots from 1306 to 1402 yards this year, and have tried several shots at a lasered mile with my 4-16 PMII.

I agree
I have 4 PMii and it i absolutely repeatable under all conditions
I will leave premier to the mervaricks

Premier is not an offbrand, they are well loved within the sniping community and also the long-range precision community. Point of fact that the Marine Corps has changed. The Scout Sniper Day Scope is a Premier Reticles Heritage 3-15×50mm Tactical. As of 2010, this model replaced the Schmidt & Bender 3–12×50 Police Marksman II LP rifle scopes. Its now called the M8541A.