I have the Erie Berkshire. It runs and smokes well. I ran it on my Legacy layout, FlyerChief ignores the Legacy signal.
When Lionel cancelled the Legacy version of the Berkshire I sent mine to Carl Tuveson to have it converted to TMCC/Railsounds. It is now a much better engine to run on the layout. Carl has a video of it on his website, tuveson.com.