Sunset 3rd Rail has done F3, F7, and FP7 units. They also have done E7s (2nd run due), and E8s. I think maybe also the FTs. All of these were ABS bodies with metal added details. They have single motor drives with gear boxes on the axles. I have a few of these and the detail and operation is very very nice in my opinion.
Sunset has also done Alco PAs in 2 runs and SD7s and SD9s. Currently they are about to start building GP9s and GP7s. The reservations for these may still be open.
All of these have DCC and sound using QSI. The drives orgininally were great and have been improved with Ball bearings in various places.