I have one and like it, especially since I can use it with different laptops. I only have two minor complaints. First, the cord between the transformer and the laptop is not very flexible, kind of like a Firewire cable, so I think it will wear out quickly with all the flexing it gets when folding it up. Second, it's kind of heavy with all the accessories. It adds a noticable amount of weight to my backpack versus the Apple adapter. It's not so bad if you leave the auto and air adapters at home.