The question is; are any of those designed to work with the Syma X8 series? And, regarding the complete kit. Well, it's not complete for one thing. You still need the transmitter, receiver, batteries, landing gear, etc. Seeing that I already have the quad, I'm just looking at upgrading, not starting from scratch. But, thanks for your input. I will check with the vendor on Ebay and ask them some questions regarding compatibility.