All but the 800 is on Vogelsangs website, the 800 is more or less a special order and from my understanding is built at that time. I have a couple Valachs and dealt with several others personally and converse with other owners on overseas forums. Not knocking any other brand, simply put, Valach is hands down the best four stroke gas engine made be it a single, boxer, or radial. They all start the same way, 4 flips choke and one sometimes two flips no choke. They, to the best of my knowledge, have never had an issue with ignition modules, cams, timing, bearings, etc. etc. The only drawback to the Valach line is the crankcase vent, it does disburse some oil. An oil catch works well and the amount of oil decreases with break in to a point of not being an issue. I consider this as knowing the internals are getting well lubricated.