I have the latest generation grey that I got from Costco about 5 months ago that replaced a 4 year old pair. There is a world of difference between them. They really seem to be getting the technology down. There was a bit of a "break in period" that I was warned about where they would take a while to change and not get as dark as normal. I took them out on my deck and laid them on a table in direct sunlight a couple of times and that seemed to help the 'break in". Now they will change in less than a minute. I have no problems with color interpretation or seeing clearly through the viewfinder.
When I started wearing transitions they were for times when I wanted to be out in the yard or a quick trip to the store and just didn't want to bother putting in contacts. These new one are so good that I actually find myself wearing them more than ever, 60% contacts - 40% glasses where before it was probably more 90-10. I was able to get a pair of so called "designer" frames, ultra light lenses, bi-focal (not only am I blind as a bat, I am an old fart.. lol), anti-scratch, transitions for just over $300 at Costco. Well worth it.