crist clapper- Since you're suffering through my/our banter anyhow, here's how I see it:
First, I like/use/recommend clay. In fact, I spot-clay at nearly *every* wash! Bear that in mind when considering what follows.
When I used clay for the "rail dust"-type contamination, I sometimes had it come back. Sometimes it came back in a really big/awful way. With the "ABC" stuff it hardly *ever* comes back at all, basically never.
Also, the "ABC" truly cleans the paint in a way that nothing else (at least nothing that's safe to use and basically foolproof) does. Gets the microscopic pores clean.
And I'm a nut about instilling marrring; I hate to polish if I can avoid it and even fine scratches/etc. can drive me nuts. With clay, if/when it picks up a speck of abrasive stuff (like..a speck of rusty iron from rail dust) it can instantly turn into sandpaper. If you don't notice/do something about it you might move that now-abrasive clay across the paint in a way that mars it. But with the "ABC" it's far less likely to go that way, in part because the chemicals dissolve/soften the contamination and the wash mitts used in the process offer a bit of cushioning (at least more than the clay does...there's zero cushioning with clay).
As for "Accumulator does stuff the proper way..." Heh heh, some folks here might say that I do a lot of quick-and-dirty :nono stuff too, but I do try to a) make my work efficient, as in do it once so it's really done, b) do stuff the easiest way (at least for me) possible, and c) use approaches that are nearly idiot-proof (well, I call it "Accumulator-proof" as I'm no idiot

).
Heh heh,
Ron Ketcham can give you a *real* earful about why ABC is so great!
EDIT: Just wanted to explicitly state that
Dan and I actually agree more often than not, and I *NEVER* want any of my posts to imply that I think he's wrongI'm right about this stuff :grinno: When we *don't* agree it's almost always just some difference in personal preferences or some oddly differing experience that neither of us can really explain.