So the promised follow-up on the Ultimate stand:
With the 3U 12" Gator case on it there's 13" from the floor to the bottom edge of the case. With the 6U 19" SKB case on it there's 16" from the floor to the edge of the case. So not much distance really.
The 12" case is very stable on it. The center of gravity is well over the area where the three legs meet.
The 19" rack was also quite sturdy. I'll definitely be keeping it for use with this rack. As you can see from the side profile, it's actually about the same size as an amp, so that makes some sense that it'd sit on there well. I'll still try to keep the weight closer to the bottom of the case, nearest the support bar, so the center of gravity stays low.
It's certainly sturdier than if the case was on it's side. But not as sturdy as if the case was just lying flat on the floor.
A decent middle ground.
I took a bunch of pictures for you. Various angles so you could see what's going on. The empty 3U case has a nice shot where you can see that the flip-out bars are spaced fairly wide on the case.
Last shot in the series shows the stand, folded, relative to my All Access for a size comparison. Folds up darn small.
Let me know if you have any other questions about it.
Ultimate Amp Stand