There seems to be some confusion regarding GSP, CMP, ESM and KMP. GSP and ESM seems to have nothing to do with each other. The ESM line is sold in North America by Kondor Model Products ( www.kmp.ca ). The line from CMP (China Model Products ) is sold by Giant Scale Planes, but is also available elsewhere such as Jet Hobbies, Chief Aircraft, and Racing Devil Models. Although they (CMP and ESM ) offer similar aircraft, they are most likely not the same manufacturers. In my experience (with the latest) models from both CMP and ESM are fine planes as a whole. There are still some minor issues (eg some hardware etc) but their products have improved a great deal, and so did their customer service. Their latest planes fly well. They are still not WM quality, but for what you pay you get a lot of goodies for your dollar. The gap between them and the top guys (WM, Kyosho, H9 ) keeps shrinking with every new product they produce.