Ok, got the PMDG.
My personal opinion about it...
It's a very nice addon, that's true.
I'm disappointed by the sound, but I just saw that PMDG recommended some volume settings. I'll check it another time with it applied before saying it's not as good as it should be.
The plane itself : flight model is really good, amazing wingflex, you can feel its weight, the behavior is highly realistic ! Good job PMDG !
Nothing to say for the moment.
The systems :
Good job, didn't have the time to test the failures though.
No surprise, being used to 744 PS1 it took me 20 mins to make it ready from cold and dark cockpit, for a test flight. I felt at home !
FMC is fine, IRS is acting realistically (but it seems it's a bit quicker that it should, didn't test both alignment times though - from ALIGN and from OFF).
Visual model... What to say. Is there anything to say ? really ?
Love the 2D cockpit and its lighting.
Way to go, PMDG.