Have to agree with the posts above. I turned my back on FSX and switched to Xplane 2 years ago. I downloaded FSX-SE just to check it out.
I have over 470 hours logged already, no OOMS, no fatal crashes and a pleasure to use. Im running a stack of addons including orbx global and vector uk2000 airports and more. The sim is stable and far less frustrating than I remember. I only have an average PC performance wise.
I cant remember the last time I used Xplane. I have u-turned and returned to FSX-SE.