Does anyone own an HO Trix Big Boy? I was just wondering on the performance. I have 3 Rivarossi ones, but I know the Trix's are well detailed. There is one here at the local hobby shop for $549.00. That's a chunk of change for 1 engine. The 3 I have run fine and need regular maintenance, such as lubrication, traction tires and wheel cleaning from time to time, but generally run well. Any advice or opions would be appreciated. Thanks.