Congrats on your purchase.
I actually like SK as a brand, particularly vintage SK, but I've had bad luck with some of the new stuff. I bought the same set you did a few years ago. I was pretty happy until I inspected the sockets closely: The broaching was uneven and off-center, the ball detents were machined inconsistently, and there was grit in the chrome. I ended up returning the set and buying a Wright set. The Wright sockets were absolutely stellar, perfectly machined, and have performed extremely well. They are certainly on par, if not better than, my Proto and Snap On sockets.
Granted, I may have gotten a "bad" set from SK, but SK has no excuse for such poor quality control. Because of my experience, I won't buy new SK sockets. And their new warranty weirdness only bolsters my decision. I use Wright, Proto, and Snap On sockets, and would recommend these brands for your future purchases.
I really fear that SK may go the way of Thorsen and wind up in the Walmart check-out isle via Taiwan as a "30-piece tool set for $9.95."