Hi...new member. For those of you who have had or currently do have both the Roundhouse Vale of Rheidol loco and the Russell, what would the main differences be? Plusses/minuses? I have the opportunity for an unused, NIB 2011 VoR or would be ordering a new Russell. Interested in the dimensional differences as well as power and ease of use of the two. Thanks very much in advance for the input!