I have the SK version at work and appreciate that I can turn all lights off.
My biggest issue is that the configuration software is proprietary and in some ways idiotic. Like, some functions can't be assigned to some buttons simply because someone probably forgot to add the respective select-list items to the code. It also lacks a feature similar to Roccat EasyShift or Logitech G-Shift (?)… if Mionix did support that, I'd perhaps even prefer the avior to my other ambidextrous mouse—Roccat Kova 2016—because the shape fits my hand slightly better. Actually I'd lose kova's extra side buttons that I use for scrolling, but I guess I could live with that.