Honestly, I would have stayed with VMS16, if not for the constant nagging to upgrade. There was a checkbox in the nag screen for "Don't show this message again", but it doesn't do anything (seriously, why include such a "choice" if you're not going to honor it?)
So last month I gave in and upgraded to 17.0 - it was a major frustration, (see here) but finally worked after I installed a better GPU. Then shortly after that I started getting notices that I should install an important update. I ignored them for a few weeks, then finally installed. Now the program WON'T START AT ALL! It crashes on startup.
And, of course, there's no way to revert to the original, pre-update version...
I posted this as a comment on this thread yesterday. I've noticed I'm not the only one with this problem, but have seen no responses to it.
I submitted a support ticket yesterday. No response yet.