Steiner is owned by Beretta.
They make some great quality glass (we sell some of the line at work).
Beretta also owns Burris - the higher end Burris scopes use the same Steiner glass.
A Burris FFP Veracity sells for the same as SFP Steiner GS3 (with all other specs being the same). Likewise, you have the Burris XTR II FFP line which roughly equates to the Steiner tactical scopes.
What's the big difference? Steiner takes parts mostly manufactured in Germany and assembles them in the US. Burris takes parts manufactured mostly in Germany and assembles them in the Philippines. One worker makes probably 30 bucks an hour and the other makes about 30 bucks a week - and that's the difference...