MK kits are a bit pricey, but include ALL necessary hardware - including the tank and it is excellent quality. These are the best all balsa kits made - the wood parts all fit perfectly and can be assembled very quickly. I don't have a 3D dancer yet, but will soon. It is cheaper to get it from Singapore Hobbies, but both sources are very reputable (I've bought from both).
I'd like to read a flight report, too... anybody??