Just built and flew my Aircore 40 trainer. So far, I am satisfied with the plane. Had a problem with one of the wing sheets that was creased in shipping. Tower replaced it no questions. The second shipment had both wings creased. Again no questions. The third one was ok. I have plenty of wing repair parts now. Would suggest you be very careful building the wing so that you don't get warp. One of my ailerons has a a slight twist, causing me to use more trim that I would like.. All in all, think it was a good choice for a first plane. I have started on a Sig SE. Given all the work and expense it requires to build it, I would hate to fly something like that as a first time one... Even with an instructor..Fred 123[8D]