if you can afford it, i would pony up and get Real Flight G5.5. It easily has the most community support in addition to flying sites and models available for free download. Most of the pros from the 3d community (including 3dhobbyshop, extremeflightrc, etc) also use Real Flight.

I would think long and hard about getting Phoenix solely because it comes with a DX5e radio. It's a very basic radio that you'll probably not end up using very often.