Voted for this one, as I liked being able to use C motors in both stages and routinely get them back.

Also, it looked good with the checkerboard-type roll pattern decals I found somewhere...

Finally treed the sustainer after many flights back in '90. Been considering making an upscale of this, and somehow make the booster glide as well.

Also, around that time, I made a scratch built stager to replace the departed Avenger. Sort of a 4 finned Comanche deal, with BT55s. Booster of this DID glide, and rather nicely, on D12-0! Lost the sustainer, however, after only two flights, and wound up losing the gliding booster too. Guess I'd better stick to larger gliders then!