Plarail Talking 50 phrase engines

[ripley802]

So with my fascination of the TnA engines and finding out how cool those are, I have been thinking about the Talking Plarail "50" phrase engines.

- are these all the model # OT-0x (1-5) ?
- Thomas, Percy, James, Gordon, and Hiro?
- are they worth purchasing?

Any other thought or information that may sway me one way or the other? Thanks all.