Well, fully a quarter of my kills are head-ons. At least AH has a collision code that actually makes a bit of since. To the best of my knowledge, I've never suffered a collision where only one plane was damaged or destroyed. And the collisions appear to be mapped to the A/C like other damage (might be wrong here, but that's my impression). Despite all the head-on's I've made, I've actually suffered only a couple of collitions, too.
Last weekend was a particularly memorable one. I made a head on with another Pony (I think). The collision seems to make a very distinct sound, btw. I instantly saw a kill message on the other guy, but I was still alive at, for the moment. Anyway, my A/C began to tumble, but by cranking full right trim, holding stick full right deflection, and carefull attention to the rudder I was able to hold (barely) controlled and level flight. I risked a look out to my left and was amazed to see about half the left wing missing -- really, all I had left on that side was a stub of wing. I quickly determined it would be impossible to turn back toward my base, let alone land my damaged A/C; I hit the silk.
While my current internal compass is still leaning toward WB, there are definitely things iEN could learn from AH. I'm holding off final judgement on whether to switch permanently until I see what WB 3.0 brings to the table. Of course, if iEN melts down or 3.0 is a bust, I certainly glad I've something like AH to prevent flight-sim withdrawl syndrome.
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Rojo (S-2, The Buccaneers)