man three hours is too low for that incredible machine. what is goin on here first titanium to a less expensive metal aluminum then 5 hour of battery to 4:30 which is in fact 4 at the begining and now 3 hours max, no L3. i dont undrestand. making three backsteps in a revision is soo funny. could anyone tell me what is goin on. i have second toughts about buying this machine and first impression is very important for me becasue i am a future swicher.