I fly it, I actually prefer it over Il-2 in every single way except weapons....
It is much more realistic than IL-2 will ever be since the Il 2 engine is much older than FSX one and I don't think it can handle many things in FSX....
The FM's are very realistic and the controls enable you to do everything in, for example, a B747, like fllushing the toilets and turning on the seatbelt signs!
And there are literally THOUSANDS of aircraft for it, maybe even hundreds of thousands... But realistically 10.000+ is a good shot.
The graphics system is almost overhauled, new map textures, all sorts of effects and lighting improvements.
Basically it's a perfect sim...
But no guns for the mil aircraft, which is the only major downfall. And the reoccuring fact that there are no damage models.