We’re very stingy with our five-star ratings, and it’s even more rare for us to slap all five onto a gadget.  So pay attention — because today we’re awarding the full five stars to the Logitech UE Boombox ($250), a portable, battery-equipped, eight-driver Bluetooth speaker that sounds absolutely astounding. In fact, the Boombox does a better job of rocking out than some non-portable, home systems costing much more.