I think the price you pay for a heavy mountain by b-mann is my only concern.
It has most of the good qualities one looks to have in a model steamer.
they are traction tires that are on the rails
a metal cone over pointed axle pickup in the tender (a al Kato Mike)
square bearing blocks on the driver axles
gearing ratio is 40 to one (I think that good)
I do not like the three pole motor it has
and the decoder is nothing special, as far as I can tell.
From what I have read, most guy who own one like it.
I think the loco to be the same as the new b-mann J.
victor