John: Both. Some PSd 2 & 3: C&O Northern (up to PSd3), N&W "baby" 611, NYC J1e, N&W Class A (Wms to PSd 3); Diesels: Pennsy GG1, SO E3 ABA, Seaboard E8 ABA (PSd3), AK SD70 MAC (PSd3), FEC SD70M (PSd3), NS U30C, NS SD70ACE; Pennsy K-4s lashup; couple of PSd1s. Lionel: CSX AC6000(?) Legacy, LC+ President Lt Mikado, LC Pennsy Flyer, LC Peanuts Halloween, LC Silver Bells, LC+BT First Responders. Maybe that's the list. Full Legacy system, full DCS system, Z4K, ZWL, etc.
Wally