It will be a good while before I make the jump. I only recently bought into CS4 and will have to get a whole new computer to be running on CS5. It looks like a pretty significant release though and I'd also love to hear what other peoples thoughts on it are.
Oh nothing special. I do all my work on a Dell Inspiron 640m Laptop. Eventually I will need to upgrade, but right now it's getting the jobs done without any problems.
I'll preface this by saying that I'm lucky enough to get an NFR copy. BUT, I am loving CS5. However, I am realizing that I am digging things that should have worked for some time now: getting rid of image buffer errors, Premiere not sucking ass, and Adobe Media Encoder finally working and not just getting stuck at 0%.
Meh meh meh rotobrush etc etc.
It's really a performance thing. I just cut a tutorial today on my laptop, and Premiere felt really responsive. Audio filters work awesomely, and I exported the whole thing out through AME.
In CS4, I had to open a tutorial in AE from Premiere, render that to a big ass 10GB+ file, compress the big ass file through QuickTime Pro. Then, I'd open the big ass QuickTime in Soundbooth for sweetening, and then merge the audio and video together in QuickTime Pro again, and flatten the Mov.
Yeah, it sucked. CS5 is a nice improvement over CS4.
I'm on the CS5 band wagon and I guess the biggest boon for me is the performance increase. I went from CS4 on Windows Vista 32 to CS5 on Windows 7 64 and it screams. A lot of the work I'm doing is green screen based using Keylight and it seems like literally overnight, my workflow has doubled. I don't get the constant crashing, I don't have to necessarily render to TIFs and piece together later and my RAM previews are rock solid.
I got CS5 running on my Mac Pro last week. I made the switch because I was doing a project in 1080p in CS3 with very high res video files and PSD files. Whenever I wanted to see the video in full resolution I would get a stream of RAM Preview errors. Enough was enough and I made the switch. I also dumped in 16gb of more RAM into my system which made things more pleasant as well.
All in all things are running error free and rendering much faster.