Why is v20 so beloved? It is the peak of the classic architecture. It supports the L6x and L7x processors. It has no "fisheye" UI bugs. It compiles logic instantly.
You need future-proofing. You need the new "LogixAI" instructions for predictive maintenance. You want the fastest compile times for large arrays. V35 reduced compile time for large routines by 60% compared to V30. rslogix 5000 version better
Version 20.04 is widely considered the most stable "classic" version. Why is v20 so beloved