Having just received my Class 37 loco, I was impressed with the entire process from order, delivery to arrival. The loco itself was as expected, incredible detail, strong performance and AMAZING sound. The lighting effects are also great, but as I am running a 'hybrid' DC layout, using the unusual MRC Sound Controller 2.0 TECH 6 power controller, so I don't have access to all the DCC functions. Those that do work are excellent, but I would have expected a greater range of light control effects, as it looks like the loco has quite a few LEDs in the cabin and around the body. The supplied instruction sheet for the loco has a large range of functions, but not all work on my setup, or are not part of this particular model. However, overall, the loco is amazing value, superb detailing and exceptional on-track performance. BUT ... don't expect perfect performance on all track. Unfortunately, I chose TRIX C-Track for my layout and I'm stuck with this rubbish track now. The Accurascale models and many other brands, don't run perfectly on this track type, especially over turnouts and tighter radius curves. Of course, the only loco and train brands that work perfectly on C-Track are TRIX and Marklin, but I have very few of those expensive models.