But there is also the TOC Aviation Yak, the QQ Yak, the BME Yak and the Aerotech Yak. They are all within 40 inch of wing area, all weigh in the 15.5 to 16.5 pound range and all have SIMILAR design characteristics. The TOC and EF Yaks cost about 100 bucks more than the others, but I would bet that they all had very similar flying characteristics.