My favorite D-powered rocket of all time is the Estes Omega. I bought an Omega/Cineroc when I was 13 or 14 years old. I put in on layaway at the Eglin Base Exchange. It took me six weeks of saving to pay the ransom and pick it up.
I flew it with the movie camera only once then Estes stopped selling the film cartridges. But, somewhere, I have that film. I launched the rocket, single-staged, on a D12-3 in a cow pasture on my mother's family's farm. We were on vacation. I forgot the blast deflector, so, in the film you see that I used a piece of aluminum foil which just blows away as the motor ignites.
I don't think I ever flew it two-stage as a kid. One D motor was too big and too scary. Two was ... well ... way too much. In fact, I usually flew the Omega on a C motor.
About a year ago, though, I built
a clone kit and did fly it two-stage. It was a nice flight even though I had to rescue the rocket from a tree.
A few years ago I build an
upscale Omega that I've flown on I and J motors. I used it to get my Level 2 certification. It carried a video camera. But, the rocket spins too much in flight, so I don't use it for videos any more.
-- Roger