Hi Guys &Gals, I am relatively new to this fantastic hobby having flown a Bixler 1.1 previously as entry to RC. I got into multis at local club where some of the guys were bringing there homebuilt KK2 quads which flew badly & DJI quads that flew superbly but at 10 times the cost. Being an electronics engineer I decided I could build one & decided to go with Multiwii because I had already experimented with Arduino & loved it. I bought an EBay X525 kit that came with Crius 2.5 clone & got it flying with some help from the guys on Multiwii.com. I soon outgrew it & wanted more advanced features like those offered by http://eosbandi.com/downloads/ So swapped the Atmel328 FC for a Crius AIOP V2 AtMega2560 & added Ublox Neo6m GPS & external Mag. With addition of Bluetooth module & EZ-GUI on my Samsung S3 I can program quad (tune PIDS & set virtually anything I can on WinGUI) plus plan a Mission on map & see quad flying it in real time! The DJI Phantom guys are blown away as the quad cost under $250 & can do things that there $1000+ quads can only dream of:highly_amused: Cheers..B