I really like the look of the Ploopy Classic. I use an Elecom Huge, and I love it. I grew up with a Logitech TrackMan Marble (the old school one, not the ambidextrous one) and I loved it. So the Elecom Huge is like a modern version of that old classic, and it’s great for office and daily use - not so much for gaming though.

All the promo pictures are cabled. I don’t have a Ploopy myself, but to me they look like they all use a cabled connection.

The Ploopy is pretty popular.