If you can add memory, go ahead and do that and keep Poser 5. I have 512 megs and I can do anything I can bear to wait on. I will say that the learning curve for first buyers (a year ago) was steep. I am only now actually able to use all of the features that come with Poser 5. Now, however, there are great tutorials around here for Poser 5. I'd say that not everything has been spelled out by friendly Rosity people quite yet, but all the main stuff has been figured out. I would say to expect a certain level of frustration with Poser 5, but I am very happy with the "printed on the box" improvements.