It allways amazes me how many First officers want to fly on the longer routes from the Canaries at .80/.81 ,only to find out when told NO that the time saved is only Eight minutes versus an extra Ton of fuel burnt. No thanlks !!!!!!!! the Cruise is for reading the Papers and magazines not waiting for a tech log entry for Airspeed exceedence, Dont even get me going on energy management for those that want to descend at .80/.81 into a jetstream