I have been using the PI 3000 SMR alittle lately.
I dont know if it has fillers or not, my finish was pretty much swirl free to start with.
My green DAS pad was picking up some dirt, so it has decent cleaning power.
It is pretty watery for a polish, but it is very workable. When putting it onto a pad, when the liquid seeps into the pad, there are little polishing particles that can be seen.
If no sun at all hits the surface, it doesnt dust, with the DAS pads.
If alittle sun hits it, it does dust, but in either situation, it wipes off very easy(easiest of the 5 or 6 polishes that i have).
It produced a perfect finish on my black hood, and on the metallic sides, it was very clear.
I applied Z2pro right over it, 2 weeks now and it is still looking good, beading very well, i got no significant bonding problems....
As far the abrasiveness of it, i dunno, im just a weekend warrior on my own vehicles. It feels similar to FP2, SFX-2, DP mild SMR, HT LC, ect.
It was alittle over 30 bucks for 32 oz. and worth every penny. I put ease of use first, then the finish, because if its not easy to use, ill never use it much after. I dont care what kind of looks it produces.