I built my trainer from a kit ,a Balsa USA Stick 40. Building sure helped with repairing and knowing how to set it up. After building some SPADS and ARF's I built a Mountain Models Tantrum. This winter I have a Skybolt for me and a Kadet for my 6 year old. A bunch of guys in our club have been building Ryan's Rebels so that will be my first scratch build attempt. After seeing my Father in law spend so much time putting together a Vector Flight Extra and still end up with an overweight cheap looking plane it makes kits look better all the time.