I'm fairly new to woodworking. I'm working on a 10'x4' walnut table top. *Disclaimer: My local woodworking shop jointed, planed and dominoed the boards.* I assembled and am currently finishing. I have no shop, so I have to build and finish in my dinning room. I've done minimal sanding in the past and have never used any sander attached to any type of vacuum. I purchased the ETS 125 and CTS 26 HEPA after reading all the propaganda about it's dust collection capabilities. I was still skeptical and had mentally prepared myself and my wife for a lot of dust. This sander and dust extractor combo is unbelievable. I had to do a lot of sanding due to excessive glue squeeze out and boards that were warped or crooked (turns out 8/4 by 10' walnut boards are hard to find in decent condition) and did not line up evenly, except right at the dominoes. There is practically no dust. I don't even have residue on my fingers after wiping them across the surface. Unless I have the suction maxed out, I do not see any swirl marks. I'm basically writing this review in case others like me are new to woodworking and researching sanders. I'm not sure how any sander and dust extractor could be better. Larger and Faster, yes, but not better. If I continue to do large surfaces frequently, I may purchase the ETS 150 for the initial coarse grit sanding, and use the ETS125 for the final fine sanding because of the smaller rotation pattern. The Festool propaganda is true. I'm glad I joined the cult.