After getting a DJI Phantom 2 setup wth a FPV setup and gimbal at my work, I am now hooked on AUVs and I am looking to build my own now. I am thinking about basing it around a DJI NAZA Lite and an E300 propulsion system and then buying the frame off of Ebay and I have no idea what type of controller to buy (a DT7 seemed to expensive for what you get). I don't want to spend an excessive amount on this AUV but I would like something that is reliable and that I have the option to modify and add onto in the future. What type of controller should I buy? What do you think of this current setup? The E300 seems kinda pricey, is their a better buy out their? Are $30 Ebay frames reliable? Does the NAZA Lite preform well? Thanks for the help!