I will say I saw the Ruby running with the bark box. I am very impressed with it. So impressed with it infact, I had a bark box installed in my S-12. On the large green track pulling 13 cars and my brass caboose she would run slow and sweet around the track. When she got to the hill in the back corner, she'd inch slowly up the grade, chuffin' all the way, "I Think I can, I Think I can..."
* Disclaimer *
I am in no way connected with R & R Trains. I met Richard this past week and would consider him a friend. He does make a good product and I am very pleased with the new sound of my locomotive.