I have 2 SIG planes but both of them were kits and I am building another one as well. I have the 4 star 60 with a saito 100 in it, fantastic plane. And I built a Wonder with a ASP 21 in it. Goes like a bat out of hell. I have started on the Hog Bipe. I did see for a short while that you could get the 4 star as an ARTF but not seen one in a while. They all seem to kits only. So what you have said makes sence now.