yes of course im using fsx also but just for pmdg a/c. i think after the release of 777 737 and 747v2 for p3d fsx will be for me just a md11 simulator
and i think there wont be much products released which are not designed for fsx and p3d because its nearly the same code. for me pmdg was the only developer for who it was worth it to stay in fsx
ps: do you use dx10 fixer?