I have 2 Sightron SII scopes. A 6X42 with Target Dot and a 12X42 with Target Dot. They are both mounted on varmint rifles. Sightron is a pretty good scope for being a no name scope. Very obscure company with a very good product at a very good price.
I have one also mounted on my 222. I think it is a great scope. I have leupolds and leica glass in my gun cabinet also, and even with that kind of competition, I still like the sightron. Someone once told me that they also have a great warranty. Your supposed to return the scope to a dealer and you will get a new one that day. I havent had to try this out yet so I dont know if it is true or not.