I built a 3DR Hexa-B / APM 2.5 from parts I picked up directly from 3DR here in San Diego. The whole build has gone super-smoothly. I have just a few flights under my belt so far- and all still under manual RC control. Today I zip-tied a GoPro HD to the hexa and took 'er up for my first video-enabled flight. I managed a nice shot of a bmx rider hitting some sweet jumps.