Hardware Comparison: VersaMax Micro and Nano Controllers vs the PACSystems RX3i
The VersaMax family is clearly the best for projects looking for a cost-effective and small solution, with a good range of options in case that the smaller models look too limited in features, and enough communication solutions for a comprehensive use.
On the other hand, with up to 32K I/O points, more advanced communication solutions, and modules for high level specialized task, the RX3i is the best for projects where performance is the most important thing