Those are some great shots, Scolo!
I'm far from an expert, but I have an old orange Drift, a Hero 3 silver, a Hero 3 black, and a VIRB, and I've managed to make every conceivable mistake with each of them. They all have benefits and drawbacks, and I'd love to combine them all into the perfect camera. If I could only have one camera, though, my hands-down choice would be the Drift. If I were going to add another camera to my collection, it would be one of the newer Drifts.
Go Pros shoot amazing videos when everything is mounted correctly and everything works. However, they are a pain in the butt to mount on a plane, they are susceptible to minute vibrations, they can be very glitchy (at least mine are), the user interface leaves a lot to be desired, and they don't capture color very well in overcast or low light situations. However, every time I'm at my wit's end with the Go Pros and I swear I'll never mess with them again, I come back with some crystal clear video that looks better than anything I could shoot on either of my other cameras. I think the older Hero 3s are plenty good if you're just starting out. The higher res offered by the newer ones is nice, but the field of view is more limited at the higher res setting, so I rarely use it. I also like the bluetooth connectivity if I want a remote and want to see the display on my iPad, but it seems to suck the battery just as bad as just leaving the camera running the whole time.
I'm still getting used to my VIRB, but so far I would say the results are only so-so. I know guys who have them and really like them, so maybe I just haven't spent enough time with it yet. The time-lapse feature is awesome. The instant-on switch is awesome. Other than that, the video quality is ok (the fisheye is more apparent and the "lens correct" function limits your field of view settings), the user interface is a bit clunky, the on-screen display isn't all that great, and the battery life is the shortest of all my cameras (although you can plug in and video at the same time, if you have a power source). I love it for the time-lapse, but in my opinion the money is better spent on a Drift.
The Drift has a good user interface, a useful on-screen display, an easy field of view change button, really long (3 hr) battery life with the bigger battery, and it picks up amazing color in low light situations with the +1 exposure setting. However, my favorite feature is the rotating lens aperture, which allows me to mount it every which way on my plane and simply twist the lens to make it upright. I know you can rotate crooked video using production software, but that shrinks your usable picture size and loads the video up with unnecessary bulk. Being able to shoot everything straight up and down, no matter how the camera is mounted, is worth a lot. On the downside, I end up shooting in lower quality on the drift (720), because it allows me to zoom in and out. The 1080 feature is a fixed FOV, I don't know if this has changed on the newer Drift or not, but I'd like to check one out. The new versions also have bluetooth, which is a plus both for the remote and the ability to see the display on your iPad, although it might suck a lot of battery like it does on the Go Pro (although the Drift battery life is longer, even than the GoPro with the backpack battery).
I shoot at least 4 hours of video for every 10 minutes of really decent stuff. The rest consists of errors, vibrations, running out of battery, having the camera mounted wrong, forgetting to turn on, etc. I've had some really cool flights with multiple cameras mounted, only to come back with no usable footage. Time after time, however, the camera that has delivered the best footage for me most consistently is my Drift.
My two cents. YMMV.
