Yes, the SAL 1650 f/2.8 is a good option - it wasn't out when I bought my CZ 1680, otherwise it would have been my choice.If you Google this issue, it comes back with quite a few hits, although the newest is about 2016. Maybe they fixed the issue.
I might keep an eye out for a SAL1650 2.8, that fits the bill I think
The problem with using Google to determine the scale of a problem is that you only see how often things went wrong (or people repeated hearing about someone else having the problem) - you don't see the numbers where the lens / camera performed flawlessly. So unless you know how many copies of the item actually sold, it's impossible to determine the scale of the issue. 100 faulty items of something that sold 1000 copies is a significant problem, but if 1M copies were sold, it's a minor problem.











