I'm planning to get a SBR, either 10.5" or 12", and putting a suppressor on it. I've read all the usual arguments about piston vs DI. Bottom line is, they both work, both are reliable, so whatever. I'm not interested in those arguments right now. What I'm interested in is cleaning. I like shooting guns, I do not like cleaning them, probably because I'm a perfectionist and when I set out to clean one, it's hard for me to stop at "good enough" instead of going all the way to "eat off it". So, for those with experience with both DI and piston suppressed SBRs, how much difference does the piston make in how dirty it gets? Is the gunk easier to wipe off with one vs the other?