Knight Rifles makes a decent product, and they're made here in the US. They are back in business, after being purchased by another investment group, but with a change of address, so you don't have to worry about service for their rifles. Knight also uses Green Mountain barrels in the Vision.
If you can get this at a good price, buy it. It shoots great. It's easy to clean and disassemble. I bought the gun after a friend showed me his, which had the non red primer carrier system in it. The gun I purchased also had the non-primer carrier breech plug conversion installed. Some people may disagree but, IMHO, I consider this a better ignition system than the original style which required the red primer carrier (DISC) system. Plus you don't have to pay extra for the primer carriers, which aren't needed. If your one of those that like to fire up to 150 grains of BP, the Vision will handle it. I get clover leaf groups with 100grs (2 pellets) of Triple 7, using a saboted 240gr Hornady XTP bullet. I think SG has Knight Visions on sale right now at a good price.
