I think for going at it by hand or in my case cheap random orbitals, 6" coleman from walmart, there is no finer finish than M105. All the people that swear #9 or Deep Crystal Polish have no cut both actually do have cut, and at least by hand and random orbital you can't remove the micro marring that most polishes leave behind, yes even the stuff that's safe for hand use.
When using the M105 and a wool bonnet on a random orbital it finishes down even finer than I have ever gotten megs #9 or DC polish. I tried to take some pics but even in complete darkness and borrowing my friends DSLR and macro lens with my new and improved point source led I could not capture the difference, there is just an almost imperceptible marring that the "finer" polishes left behind. And I worked both by hand for about 5 minutes on a small 4"x8" section so I know the polishes broke down.
The key is GO SLOWLY! I cannot stress this enough I look at all the videos and people move the polisher too fast and it all flashes off and they think the panel is done, I don't even spread the polish I just use a couple pea sized drops on the bonnet and put it down on the panel and go slowly, usually one or two slow passes get the damage off. Also going slowly will leave behind a less tough to remove haze. I've looked over and over and I get no residule holograms or micro marring. And use straight wool not foamed wool or foam pads. I've found foam absorbs the lubricating oils too much which can also explain the too short work time, and sub par performance. When I use wool and move my random orbital coleman slowly, about a foot every 20-30 seconds using light pressure it takes off all the swirls and leaves behind a good finish, but my secret is to use a sprayer filled with distilled water and lightly spray the panel. This rejuvenates the broken down polish and leaves and even finer finish, yes finer than I could ever achieve with my coleman and DC polish (and DC is about the lightest cutting polish I've ever tested using my cd test, until M105 that is). Yet no polish I have ever tested can match the finish on my cd test that M105 left behind.
Now I have no doubt that D151 is using the same abrasive as M105 and that is a one step product so why is it with such strong evidence as my cd test can people believe M105 can't truly be a one step polish? And unless you're going for absolute show car perfection I believe when used correctly M105 can be the best finish for daily drivers.
If no one here has read my grits and gravy post, it's my cd test which tells me a lot about how a polish will behave it makes for some really interesting reading.
http://www.autopia.org/forum/detailing-product-discussion/110669-grits-gravy-unusual-findings.html
