I have both the FlyCamOne2 and the DV5100M...

I purchased both specifically to attempt to put them onto RC planes.

The DV5100 produces MUCH better video.

However it is not easy to mount, it weights 8-9oz with the batteries in place, you need to keep that little "door" open for the camera to work, there is NO provision for remote control, the camera has to sit upright, etc, etc. etc.

All in all the DV5100m proved to be more problematic than it was worth, so I ended up using the FlyCamOne2.

The FlycamOne2 weights LESS than 1.6oz. It can be remotely controlled, there is a provision for adding a servo to adjust the camera angle in flight, it can be controlled by your TX, it can be velcro'd onto a plane...

... I've even velcro'd it onto the outside of a plane wing, and because it is so light it has never fallen off even through violent manouvers... not that these are interesting from a video standpoint.

Both cameras do best on SLOW electric flyers. Obviously you want a larger electric for the DV5100.

Glow/gas engines cause a harmonic vibration problem which causes tearing of the video image. This is quite annoying and detracts from the final result.

The Electric planes do best with this.

Sudden movements on the plane produce poor video results, so you want something that turns and moves SLOOOOWLY...

The best results I've seen have been with a little electric Wingo using the FlyCamOneV2.

The Wingo is so slow and steady that the resulting videos are interesting.