4-8-8-4 UP "Big Boy" vs. 4-6-6-4 UP Challanger in N scale

Trains Magazine Steam & Preservation
1

I am going to build a N scale MR and didnt know which loco was better as far as the pros and cons. Let me know that would help. Thanks. [%-)]

2

You might do better posting this under the “Model Railroader” heading. This section is for the discussion of REAL trains, not models.