I think too many reputable companies start turning out sub par products to gain a bigger market share or profit margin. The VX-5 & 6 HD are great scopes, and the Mk 5 I would call a great scope except the price for the illuminated model, which I have. I pulled and sold a SS 5-20 HD for $900 and put the 5-25 Mk 5 on the rifle for $2600 plus tax. Upon reflection I would rather have three SS 5-20s vs the extra magnification and better glass. Better glass is better if you had bad glass, but the 5-20 is no slouch, old technology or not.
Husqvarna bought Poulan and quickly renamed the Poulan Pro as a Husqvarna. It has since ruined the name and you have to see if something was made in Canada or Sweden before you buy.
Nightforce = SHV
Meopta = Optika 6
Zeiss = Conquest Which is actually a great scope but not a Zeiss
These are off the top of my head but the list is long.
