Pros: Wireless as well as Wired! Much improved over previous version. I owned the 2012 model and hated it. The stand was hard to seat properly on to charge and the battery would not hold a charge. Also, the surface material pealed. All this seems to be fixed and I am very happy, so far.

Cons: Random pauses. Still working with different combinations of polling rate and DPI but while moving the mouse it seems to randomly lose connection and reconnect within 2 seconds. This can be inconvenient especially considering this is a high performance mouse.

Pros: None

Cons: It was dry. So thick I could barely push it out of the tube and could not spread it at all. Temps were all over the place and I ended up burning out a new CPU.

Overall Review: Probably improperly stored before shipment.

Pros: Overall Strong construction and easy to put together.

Cons: The seatback tilt has no resistance. I forgot that and attempted to lay back for a nap and banged down which resulted in plastic side cap breaking off. Also, that gas lift dropped to far into the base (nearly to the floor) and thus I lost 6" on the max height. I suspect the shaft included may be the wrong one. I am 100 lbs under the max weight and feel that the seat is too narrow and unless you sit with you knees almost completely together then the side padding will dig into your legs. The seatback is also a few inches shorter than I was lead to believe. Additionally, the seatback attachment point is the only part I had a hard time with. Once the screws are removed the leather shifts and can be a pain to align when locking down.

Overall Review: I had expected far more. My old $75 chair was more comfortable.