I'm messing with just about everything. I'm very new to this stuff and have very little technical experience so I'm doing everything backwards. I bought an Arris X-Speed 250B and a JJPro P200. I wanted to "reverse engineer" everything in my mind. If I can take something apart, I can usually figure out how it works. I haven't done much with the P200 yet but I've been all over the 250. I pulled the FC and replaced it with a newer SPR F3 (first soldering job ever, those header pins were a PITA for me!). I moved everything from Cleanflight to Betaflight. I swapped the stock camera for a RunCam Night Owl. I modified a makeshift camera mount for a Mobius or SJCAM camera. I purchased a Taranis X9D and the X8R and replaced the stock R9DS transmitter with the X8R. I've programmed the Taranis and added custom graphics and sounds. I installed a FrSky FLVSS LiPo Voltage Sensor. I've messed around with many different antenna combinations. I started to install a D4R-II on the P200 this morning so I can use the Taranis with it but my first attempt wasn't successful. I couldn't get it to bind. I quit screwing around with it so I could get some actual practice flying in while the weather is still decent. I'm just thrilled to be learning! I'm retired so all my drone and motorcycle stuff keeps me busy. Probably more of an answer than you were looking for but you asked! Anyway, I truly appreciate when people, like you, are so very helpful. I try to help others with their Phantoms and Solo's when I can.