That depends on what you are trading with. From what I have read on RCU, It really doesnt matter what 40% you get, They all fly better than the smaller planes. Some harrier better than others, some do pattern flying better than others, but the are all similar in design. Plus I have heard nothing but good thingsd about carden kits. The only major concern I have heard about them is they generally weigh a couple pounds more than similar sized kits from other manufacturers. Going back to what I have said before, Look at all the variation of models pros fly. Most fly Aeroworks, a lot fly carden and CA models. A couple Composite ARFs, Troy built models. Ohio models. There are millions. I say go ahead and get it unless you a trading something like a 50% extra. Good Luck.