ty Glow. it's hard to describe. it's such an entirely different experience than XP.
I don't know if or where I may have said this already, but some of the best flying experiences I've had in a long time have been in there. I wish I could use LFX, LJX and NXR.. but for that sometime I'll do some similar flight tasks in XP.
I could probably say more, but it'd just be ramble. Many probably see GTA as a game, and or a game with a much different play method style way activity. Like XP it's open world and potential as much as you make it.
here's one of the GTA:V story missions which shows the first big flying job; [R* language] 18 min.
Aircraft segment starts about 8m30s
http://www.youtube.com/watch?v=xuCsQCcFFuA
and the vehicles page, look at the Helicopters and Planes sections;
http://www.grandtheftwiki.com/Vehicles_in_GTA_V