They are good to go. They are very bright and clear. The exactrac tracks very well. I shoot to from 100- 1k+ with a 6.5 CM and The scope runs out and back perfectly. They are very good with any warranty stuff. I had one of my older scopes go back for a repair (user error, don't ask), and it worked out fine with no charge. I prefer the Stac, SII, and SIII series glass over the Leupolds. I've pulled a few Leupolds and Bushnell to sell them, and use a Sightron instead. I think I've got five or so Sightrons now.
The Blue Sky series has been discounted, but can still be found for sale from venders. They are a great scope, but the line was cut to expand the same size scopes in other lines. The Blue Sky cost too much to produce, and was very similar glass and price to the SIII.