I just bought a DJI FlameWheel F-330 basically because i want a frame which guarantee me an exact angle on each motor. This way i can eliminate an important element of failure and getting my quad out of sync.
Here is my complete configuration:
DJI FlameWheel F-330
4xT-Motor 2212-16 750Kv
4x10Ah Turnigy ESC
with 3DR radio and GPS
I also have a sonar but after reading about many problems consider AltHold i decided to wait with this device for a while.
I really miss a place at this forum or at wiki where people can put in configuration data and their successfully PID settings.