The controller is fantastically designed with excellent build quality. I also give credit for the fact that it's slightly weighty which goes down well when playing games, because it feels very robust. The device comes complete **with the receiver included** as well as an installation disk.
I'm cursed with massive hands, and despite the compactness of the thing, it fits beautifully into my palms, and my ability to engulf it makes operating the thumb sticks feel much more sturdy. It's so tactile and you feel that you are playing with a very high quality device indeed, yet at the same time it manages to slip from existence when you are fully immersed in game play. A while ago I spilled some juice over the X and Y buttons and I faced the dread of the buttons sticking down. However it seems to have miraculously healed its self and it's now working as if it I had just bought it!
Overall I am very pleased with this controller. I haven't had any problems with it whatsoever. It has a more than adequate battery life and operates without a hitch. I am certain that you will not regret purchasing this controller, as it makes the perfect companion for every PC gamer!
NB: Just to let you know, the controller will turn its self off automatically 5 or so minutes after use, however to save battery life I usually just pull the battery compartment away then click it back again