If you are getting a new system I don't think you'll have much problem with poser5, I myself and everyone I've talked to who have loaded it into brand new systems seem to have avoided many of the bugs that have been reported here. P5 does have all of the built in features of propack along with all the new stuff the only thing it lacks from Propack is the plug ins for exporting into some of the high end programs and CL says they are coming eventually.