I'm a long time VPI user.
VPI, to their credit, constantly listens and updates their product line for better sonics.
Here's the problem... they leave their customers out in the cold as far as being proactive in regards to their upcoming product lines or their ongoing product line issues and how that relates to their loyal customers ongoing issues.
I know of no other company anywhere in America that has such a strong loyal following despite of this companies' inability or pure lack of trying to be proactive in regards to their product updates, their product failings, or their product's future. It really is remarkable!
It's almost like they view us, their customers, as their own form of advertisement! In spite of all of the failings, somehow they make it work. Wow!