Ihave built 2 of their 1/2A P51's as well as one from the RCM plans that were published just before House of Balsa started kitting the the 1/2A P51. They are a nice little 1/2A plane. Ihave one of the HOB 1/2A Bonanzas too but have not built it yet...but you did not ask about GA planes, only warbirds.