I bought this vacuum mostly for it's zero-m technology to replace my Duo-clean flex which was great but without zero-m.
The vacuum has plenty of suction like my previous one and is excellent on all surfaces.
The zero-m technology works like a charm, no twisted hair around the brush, I was no sure how well it would work, but I am impressed, all vacuums should have this feature.
I give Shark a 10 for this feature.