Actually, I would list your hardware/OS and then ask the question... Right out of the box on first release - almost everything worked but the time was unforgivable (am a contractor so cant spend that much time just loading a program and an eon to render animation). Using xppro on a 1.8 with 512 meg was a drag (however, 2.1 sr sped that up a bit) so I put together a new machine with massive harddrive and 2.8cpu and 1gig mem with 4096 virtual mem and turned off xp cute desktop stuff and now cant tell the difference [w/sr release] between PPP load and my P5. However, when loading from laptop (which is allowed by cl) with 128meg only 10g free harddisk P4 650? - I want to shoot myself. Luckily, only use laptop at poolside or if in bed with cold/hangover/headache/etc. So the big question is - what computer/os/mem/hd are you using? Then make the decision to upgrade. And you definitely want to keep your p4/PPP seperate from P5 for those quickie jobs! P5 will let you add the P4/PPP runtime to the P5 libary so you don't have to duplicate libraries. I personally think is worth the upgrade/addition but that's just one poor souls opinion.