I had the problem badly on my Mk2 (solved by Polaroid clipons), and have just bought a new Mk3.
My assessment is that the Mk3 is definitely better. The reflection is much less bright and more uniform, so much less distracting and noticeable. Like a slight lowering of contrast more uniformly. There are still small bits of bright reflections at the edges, but less distracting than the Mk2. I still use the polarising clip-ons, but less often.
These comments only apply in bright sunshine from the front.
My wife still has our Mk 1, and I find the Mk3 better than that too, in same way as above. The Mk1 is better than the Mk2.
From the variety of responses it seems a highly personal issue.