I had one but sold it to pay for the challengers that were scale in size.
But...
While I had it it always ran well, and I have heard many say that it is their best consistent runner, and always problem free.
Its my understanding that Lionel only had rights to produce K-Line, but that all the tooling and the company was owned by the Chinese company Sanda Kahn (or whoever), I wonder if the big boy tooling went the way of the S Gauge Mikado.
Ben