I'm two weeks post-subcision and using a PMD Personal Microdem machine without the exfoliating disc for suction (available on Amazon for $120 to $160) . Although it's kind of pricey, between my acne scars and stretch marks, I'm sure I'll get plenty of use out of it so decided it was worth the money. It has worked beautifully so far, but some of the reviewers commented that their machine lost suction power after a relatively short period.
The PMD does a good job of pulling the skin up, and I can slide it around on my face so don't have to suction each scar individually. I targeted a couple of the deeper scars individually and was able to create a small hematoma, which I felt was beneficial based on the study. I think using the PMD may have have also extended the bruising period slightly, which I also feel good about because I feel more confident that the tethers are not quickly re-attaching. I started 24 hours after the subcision, made one pass the first day and then increased to 2 passes twice a day the second day and three passes three times a day the third day and onward. I plan to continue the suctioning for another week. Although that's slightly more aggressive than the study, I felt it was justified due to the suction power being lower than the professional machine used in the study.
Although it's too soon to tell the long-term outcome, at this point I'm seeing a 60 to 70 % improvement. Having spent thousands of dollars on a painful laser resurfacing with an extremely long recovery and some permanent discolorations but almost no improvement, so far, I'm thrilled!