I used M205 for the first time yesterday and was very pleased with how well and how easy it was to work with.
I had primed the Sonus Orange (swirl remover) pad that I had and let it sit for about 30 minutes. At first I thought the M205 was a bit too watery but it wound up being perfect. The hairline scratches that I was attempting to remove came out without issue, and the resulting finish after wipedown looked like I could have stopped without sealing...but of course I followed up with BFWD Polish and Sealant for a spectacular finish.
No dusting, super easy to apply and great results. Think I'll ditch some of my other product experiments as this one was a success.