This is the best of the lot.
It came in a case, always a good thing, with a selection of sanding pads/paper.
The papers are held very firmly in place by velcro, which is very effective.
The range of sandpapers is excellent, and inlclude pads that resemble wire wool for fine sanding.
There is dust extraction, though I find the sander harder to udse with this. The best feature of all however are the gel pads, which greatly reduce, but do not eliminate vibrations.
Excellent.