Well have only had one Sightron. SII 6-24x 42mm with target dot. Had top quality glass with great resolution. Wonderful 1/8 MOA adjustments that really work that way. Tough, tough coating on the scope tube. And wonderful 720 degree AO that would focus the thing right down to(actually a little less than) 10 yards.
However, it had mediocre coatings. It wasn't very bright, and it would either glare on the eyepiece or in the scope if the sun was low in the sky. If trying to use at night, any light to the side or behind you caused problems. I really liked the scope for target work, but if the low mag SII's are the same, you can do better for something you might use at night or for other hunting. A Nikon Monarch, Burris Sig, or Bushnell Elite 4200 would be better choices for those uses.