I tried looking for an existing thread before starting this one and if I did not go back far enough, please forgive me. 

I currently am running a Sony Viao with an i7 proccessor and win7 64 bit and have Poser 6, 7 and 8 installed currently, my question is instead of installing a 4th Poser program I have seen where you can upgrade Poser 8 to Poser Pro 2010. What are the pros and cons of doing this?

Is it possible to just keep the runtimes from these programs to consolidate some of these programs, I thought about installing everything on Poser 8 but the almost 150-200GB of runtime materials and lets not even try to talk about my filing system to find the zip files for all of them to begin with. Plus I am not sure that the Pz3 files I have from Poser 6 and 7 would work in Poser 8 if I deleted them in favor of just one program.

I have lurked here for a while and have asked an occational question and find everyone to be very helpful which is greatly appreciated I just wish I could give more back to the group.