I've been on a makeover kick lately. Today I finished weathering an Atlas RS-1 (TMCC) that I repainted in a Pennsy scheme. I kept the original number boards, which do not match a real PRR engine. The engineer figure was replaced (Woodland Scenics), and I opened up the side window--otherwise the locomotive is bone stock. The Atlas is a heavy, smooth runner. My only complaint is that the speaker is wimpy compared to Legacy diesels. I've ordered a Fatboy speaker in hopes of hearing some improvement in the bass response.
Alongside the RS-1 is a Lionel TMCC K-4 which will soon get a light weathering job. It too is a good runner, but I'm seriously considering replacing the smoke unit with a "Super Chuffer" or similar upgrade. Any recommendations?