Here is a demonstration of the EZ Command with an ON30 loco.
There are other ON30 videos that might be of interest.
http://www.youtube.com/watch?v=mpxXCvVkzYM
Here are links to many DCC sound locos.
http://www.youtube.com/results?search_query=dcc+sound&search_type=
Rich
I want a ATSF Dash 9-44CW with those features, but I'll wait.