I've been simming for many years - probably spending more time in FSX/P3D than any others - and had never really been impressed by XP, until a sale offer for XP11 suckered me in.
After devoting a lot of time tweaking FSX (DX10 Fixer) then P3D (PTA), I was impressed by the lighting model in XP11 - even without tweaking. However - no sim is perfect and water, clouds and general shading etc. in XP leave a lot to be desired (just as in default P3D).
FlyAGI is one of the many scripts I've tried - and it really has helped to make XP11 a much better experience all round. I've ditched all si