A2A Simulations have come a long way since the early days when they were known as Shockwave Productions. I remember with affection the Wings of Power series for FS9, but those early first steps pale in significance when comapared with the new stuff adorned with Accu-sim.
I've got quite a few of their aircraft. I'm still flying their P51H which I've ported into FSX from FS9, but I particularly like their Wings of Silver B377 Stratocruiser which is a beauty!
You'll find them online here.
Below you'll see another port over from FS9 which you can see from the modern attitude indicator. A2A have released an FSX version of the B17 with Accu-sim, but I haven't got around to picking it up yet.
This is a picture of the P51H cockpit, another port over from FS9. This has special significance to RTW Race drivers because it is a favourite race plane. It's probably the fastest naturally aspirated prop aircraft ever built.
Another fine example of A2A's penchant for old WWII war birds. This is the P47. I just love the tail draggers. It's probably that bitter sweet nostalgia associated with old war memories.