Actually, importing into Vue or Carrara can bring its own set of problems.   Import from Poser 7 to Carrara isn't possible;  it has to go via Poser 5/6.   And... Carrara won't recognise much that comes out of the Poser Materials Room.  

Vue 6 can import Poser 7 material quite accurately, but swallows up immense amounts of memory in the process.   I gather that systems with the ability genuinely to exploit 64-bit addressing cope very well.    A 64-bit operating system, with 4Gb+ of memory to play with, may handle Poser imports comfortably.   A 32-bit OS, with 2Gb of memory,  which is what I currently use, definitely does not handle Poser-to-Vue imports very satisfactorily at all.     The issue with Poser-to-Vue isn't so much at render-time, but at import-time.   I do like the results of the Vue render engine.