I wonder whats accurate, too. Some of the planes I like a lot (GPLWS, a low-wing trainer), there's the Hangar 9 Pulse, which people say is a great second plane, but on FMS it seems a little slow/slow to respond, then there's the aerobats that I think might respond a little too well (they seem to easily break the laws of physics). But like I said FMS trains your thumbs; I don't think about switching directions if the plane is heading toward or away from me (when I do think about it is when a mistake happens; it's become second nature). I think landings are pretty realistic in the sense that you can land kind of hard without the plane crashing, but not too hard. Some sims you can land 6" below the ground and the plane is still OK, others seem a little too sensitive. All in all, it will help you (hey I'll say it again, it's late and i'm tired) train your thumbs.

Enjoy, and remember all the add-ons you can find at rc-sim.de