I have only use M105, so I don't have that much input. But I wouldn't say it's a product to be used with the PC...
I have heard a lot of people have had good luck with both 105 and 95 with a PC, but i use a flex so no first hand experience. But if i were in this situation i would definitely pick up #83 and #80...that is a pretty good combo....95 for a heavy hitter, it is a more traditional compound
I've had excellent results with 83 (finishing down LSP ready) but I've been iffy on 105. It seems to flash almost instantly. For some reason I can get PG to get rid of wetsand marks in 2 passes but I cannot get 105 to work at all...very odd...
Yeah, 105 is tricky stuff, but once you get the hang of it, you'll probably use it as your "go to" heavy comopund. When I'm working with any polish *except* 105, I spread it around the area I'm going to polish very evenly. You can't get away with doing that with 105. In fact, you really can't pre-spread it at all. It'll dry and/or flash before you can even get back to it to work it. The trick is to *not* pre-spread it at all. What I do is put a small bead on the paint (I normally put polish on the pad, but putting it on the paint seems to work best with 105), then pick it up at 1k rpm, then immediately start moving the pad. Working it and spreading it at the same time. I also start counting to 20. Once I get to ten, I go back over the area I've already polished, making a second pass. Hopefully, I get right back to where I first picked the polish up off the paint when I hit 20, cause that's all the working time I can get out of 105. If the area has heavy defects and requires a third pass, I stop doing new paint at 7 seconds, so I can get three passes in before it dries. This technique seems to work pretty well. Three passes of 105 performs a serious amount of correction. M105 also works best when you shake the bottle for three minutes straight before using it. I give it a couple shakes before each application, too. Really strange stuff to get used to, but it sure is worth it. M95 is grreat stuff, too. It has just about all the cut of 105, and finishes *really* well for a heavy compound. It's worked/applied just like any other traditional polish; work it til it goes clear, and remove.
