I have FSX myself with some higher-realism addons. I have the T-6 from Alpha-Sim, PMDG's J-41, RealAir's SF260 and Duke, A2A simulatons' Stratocruiser with Accu-Sim, Captian Sim's 757, the L-39 from LotusSim and VoxATC. I don't have any scenery addons, though, I'm more into reading the 500 pages just to know how to start the engines!:book::D
I saw that same show about the airports, too. Most of those fields are not represented very well in default FSX scenery. If you want to make the most out of visiting them, get some addon packs that include these fields.
One airport I think they forgot to include: Innsbruck. One of the default missions has you flying the LOC DME west in a snowstorm! Fun.
If you have any instrument-related questions, ask away!