I recently started control line flyingagain and have been building planes that I had when I was a kid. I have a Half Fast III that is a delta configuration. I have a Fox Combat special on it and is scary fast even without pressure. It flys very well. If you want to see what one looks like, go to www.controllineplans.com . I have another Delta calleda WOW, a design form the 50's. It flys OK but not as well as the half fast.. I have another one almost finished. I like the design a lot. It is really rugged. Barry Baxter sells plans foralmost all of the old favorites in controlline. Very nice full size plans, which is far cheaper than scouring Ebay for old kits.