One big difference for me, although it might not be important for you, is that even the non-pro version of poser 11 is 64 bit, while poser 10 is 32 bit (poser 2014pro is 64 bit). This means poser 10 was limited in the amount of ram it could access (about 3 gig I believe) so if you do large multifigure multi prop scenes in p10 you could run into memory problems, I did manage to crash p10 with a low memory warning on at least one occasion.