Thanks for your quick responses, guys :)
I must admit, if the Mirage was out and equally well regarded by the community, I'd get that first, simply because of how it squares up with 4th Generation fighters, especially in BVR, as Kelevra9987 points out. It will compliment the Hornet and F-14 when they are released. There is that uncertainty about the state of the, albeit high fidelity FM, at least in the Beta release, as well as just how in depth the systems are. It's quite a lot of money, well for me anyway :)