My 15 has been running in on my rolling road for the last two hours, it runs beautifully. One unforeseen problem, though - my DCC system at home is a simple early Digitrax Zephyr that can only access F0-F9, so I need to look at an upgrade before I can finish playing with the 15's higher sound functions! I like the Zephyr's form factor for the workbench, so maybe a Zephyr Xtra.