review/feedback for fast-stat product?

[emmaps]

Hi everyone,

I'm searching google for fast-stat review and there's not many at all.

As this is a fancy forum for hvac professionals, can someone share your feedback/experience on the fast-stat products?  Do you have or heard issue from it.  The other product I see is venstar add-a-wire (where I can install 2 kits to make 4 wires into 6)..and it has a lot of good feedback from amazon.

Thx.