I haven't had a lot of time to fly yet due to my job, but from what I have done I like the sim a lot. I can't really comment of the flight model since my knowledge of WWI planes is limited and I have no idea how they should handle. I will, however, say that the planes are plenty hard to fly and I would rate them well above arcadish. The game runs surprisingly well on my semi-aged rig, I'm able to put everything on high except for one option (landscape I think) which is on medium.
Specs:
C2D E6600
Geforce 8800GT
2 gigs DDR2 800
running at 1280x1024
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