I'm really impressed by the features included with the new F-series PLCS. You guys really outdid yourselves. Ethernet? Two RS-485 ports? Direct stepper driving? Separate ground for I/O banks? (edit: Wow, and ZigBee support)
Unfortunately we no longer make the product that we used to buy TriPLCs for but we would have instantly replaced the MD888+ with the F2424.
We'll definitely keep this in mind for future projects.