If you want to get the most leverage out of your content, Poser 2014 is the best value.  It changes everything. 

64-bitness is nice, but that is one of the lesser advantages.

Got clothing for a figure that doesn't have the morphs your figure uses?   "Copy Morphs From" is a 1-click solution to put those morphs into the clothing.

Want to put clothing designed for 1 figure onto another figure?  A few (less than 5) minutes of quality time in the fitting room and any clothing fits on any figure.

Don't want to play with the fitting room? - There is another solution - Wardrobe Wizard.  It has been an add on to Poser since Poser 8.

Wish your legacy figures could bend & move like the latest & greatest figures?  Weightmapping and subdivision are your solutions.  I can make the Low Res Poser 2 figures bend better than V4 out of the box. (subdivision=3)