A BIG YES!!!!
I started buying their diesels a couple of years ago when I got back into the hobby. The first one I bought was a PRR MP-15 switcher. Since then I've added 3 more MP-15's, including the LIRR Greenport Scoot set, and 4 Plymouths, and 3 S2's. I don't have any steam yet but not because I haven't been looking. They made really nice stuff. For a conventional 027 runner, they are really nice. Only change I've made is to wire the MP-15 motors in series to slow them down. Still don't understand how their management could not keep the company running when the product sold itself.
This F-unit is a dummy but could easily be converted with a motor and board. It has the lights and pick ups.
The Plymouths have fan powered smoke units and can pull more than their share of cars.