Awesome, Dan!
They're all nice products. You're very familiar with non-diminishing abrasives, so these are all up your alley. Although, they definitely have a different polishing feel than Meg's SMAT polishes. HD Polish+ is bubba proof and finishes very well. I don't have a ton of experience with Cut+, but the times I tried it, I liked it. Currently, My main focus with 3D polishes is ONE. I haven't used it a ton, but I'm liking it more an more. A little really goes a long way! I haven't experienced dust so far. It's give a real nice buffing feel. Good lubrication. Does not dry out. I really haven't put its cutting ability to the test, as I've only used it on soft black paint. It does leave an oily residue(like some Menzerna) upon wipe-off, so I'm going to try using less and see what happens. I am huge fan of non-diminshing abrasives, but I do not have one single Meg's polish in my arsenal(anymore). I find 3D polishes easier to work with.
Please let us know your thoughts!!!!!
FWIW, my current favorite all around polish is Sonax Perfect Finish!!!!!!