I dont know if the mighty mouse i got was worth it, i spent $70 on the bluetooth version. but right now i dont think it was worth it. maybe the next computer i buy, i'll just use the trackpad. but my brother has a MBP 15" and if he runs a pro app, then maybe he could find some use of the 360 degree scrolling. we'll see. i paid the extra 20 for the bluetooth version and i'm glad i did that because CORDS SUCK. the fewer the better, that's why i asked my dad for the airport extreme.