As I continue to build Rokr and other designers' creations, I come across one that supercedes all the others in terms of design, function, ease of building and the all important WOW factor. This one really delivers on all counts. First of all, for all it does, it's a relatively easy build. The directions were clear and precise. The pieces pop out rather easily and fit together perfectly. I did have to shave some down a little to fit more easily, but very few. If you break one, a little instant glue solves the problem, plus there are many spare parts provided. There are two places along the construction process where you need to test the power and gear functions, and it's good to find a problem when it's easy to correct. The finished product is indeed awesome. There are many moving parts to enjoy, and the lights and music add to the charm. I took a video of it, posted it on Facebook and got lots of positive comments. I love the fact that it's powered by a ubl connection instead of batteries that fade out over time. This one gets a prize position among my vast collection of completed wood puzzles (over 60) and will probably retain its title for a long, long time.