Thank's to both of you for your information!
90-120min of aircraft/cabin preperation and start-up time is a great time for both aircrafts. Interesting to know that G550 and Globals do not like cold temperature. I hope I will never fly to Moscow ;-)
The mission profile will be a mix of long haul (transatlantic crossing and far east out of Europe) and short-mid haul. We calculated an average flight time of 90min per leg by a total of 350-400h TT per year.
Performance is very similar on both aircrafts. The G550 is not certified for steep approach but the 650 will be at the end of 2014.
However, on that level of aircraft handling I guess it's like "talking about peanuts". There will be always a head on head fighting of both manufactures...
But maybe you can give me some examples of handling and solving a problem during a flight...? and if was required to press the "event" button, was you able to talk to a specialist on ground via sat phone? how was that kind of service/support?