My O-gauge steam power is mostly small postwar Lionel - whatever has been available and affordable. I got into O-gauge for "toy value"; my scale modelling is in HO.
2-4-2 Lionel prewar #262 - was my dad's train, runs but needs worn squealing bearings replaced.
2-4-2 Lionel Scout #246 - low mileage, runs good for a Scout. I added a Scout smoke unit from a #236 junker.
2-6-2 Lionel #2026 - Train show bargain, needed minor repair. Runs and smokes great.
2-6-4 Lionel #2037 - Gifted from an old family friend. Runs and smokes great, with Magne-Traction.
2-4-2 Lionel Scout #1120 - Die-cast body and metal frame motor with 3-position E-unit, runs great.
0-4-0 Lionel Scout #1061 - Re-engined but needs more work. Cheap forward-only version.
4-8-8-4 MTH PS1 Big Boy - fluke purchase, a bargain that needed minor repair and now runs great. I reworked and expanded my floor layout to accomodate this big engine with suitably long trains.