Edited to add - actually purchased the 75cm dirrect from company with their dust extractor and GUYS: From every Youtube, reddit, or product forum review - I had *no idea* a dust extractor could be this phenomenal - from its size, to how much dust it catches (like, 98% minimum?), to its gadgety handiness (eg the sanders plugging directly into the machine, whether you’re running it or not - saving on power, tidiness, everything). Even if the sanders weren’t 10/10 (which they are), the dust extractor alone - THIS is the one to get, forget the rest!
The smoothness and evenness of the function - so much easier not to accidentally over or under-sand, flat and even surfaces remain flat and even. But then its incredible versatility in getting around corners and edges is even better.
If you’re using Polarshine or using it to buff in general, it makes a *phenomenal* difference - no ‘catching’ of the pad to your wood from your wax or whatever.