Found an MTH Coal Turbine, one of the original PS ones (20-2214-1), with the bonus that the previous owner had already upgraded it to PS2! Since I can't find one of the new PS3 ones (20-21054-1) anywhere, I figured this would be a good middle ground. Plus I'm buying it from one of the biggest used train(z) resellers on earth, what could go wrong?
Well, a lot. This engine is in WONDERFUL shape on the outside, but the inside is a mess. It looks like the entire front smoke unit on the B-unit was removed, and someone just sealed up the stack, presumably so you didn't drop smoke fluid directly onto the electronics. The rear smoke unit has some especially cooked batting, and the smoke unit in the lead unit sounds like it's a car trying to start in the cold. All of the sliding switches for the smoke units have been removed, the reseller drilled a hole into the mesh where the rear smoke unit sits ("to get a needle in to fill the smoke unit" they say).
Sigh.
I'm tempted to try and rebuild this one with a new PS3 upgrade kit, and put the smoke unit and switches back in place. Or, just keep hoping for one of the newer ones to show up in Buy/Sell. I do love this engine, though. MTH did a great job with it!