If I had £2000+ to spend, I'd use it in a real aeroplane!
I know that many of the hard-core simmers are interested in heavy metal, not spamcans, so that's just my personal view.
What about joystick / yoke & rudder pedals? Comms stack?
If you are going for that level of immersion...
There are some stunning possibilities for flight sim environments - not necessarily FSX - involving multi-screens etc. that really do look the business.
Each to their own.
SD