The Pro X Superlight 2 Dex is Logitech's asymmetrical, right-handed alternative to its ambidextrous Pro X Superlight 2 — this mouse features an ergonomic (ish) shape and has otherwise identical specs to the Pro X Superlight 2.
There aren’t that many MMO mice on the market with massive amounts of programmable buttons in comparison to FPS mice, SteelSeries has provided some big-brand competition to the Razer Naga, Corsair Scimitar, and Logitech G600 in the form of the Aerox 9 Wireless MMO/MOBA mouse.
The Logitech PowerPlay 2 has a (slightly) larger charging area, is (slightly) thinner, cuts all of the original's non-charging features, and still costs $99.