P5 really takes a lot of hits, and in truth, most of them are well deserved. Its original release was as buggy as a New York deli. But on the other hand it was absolutely a quantum leap forward, both in content and features. I still occasionally use it, mostly because it was the last version not to suffer from user input delay. Both 6 and 7 have an annoying one or two second time gap between executing a command and actually seeing it performed in the view port. That drives me crazy.