Adobe Creative Suite 4

I was wondering if any of you have had a chance to try this new software suite from Adobe. I am happily using CS3 Suite, but I am curious about what features and upgrades have been added that make it that much better. I looked around on the web and kind of read mixed reviews. Anyone that has used it, let us know what you thought. Hopefully this version doesn't each up so much damn RAM like CS3 does. Then again if you have a new computer, I am sure that it can handle it better because your processor speed is more than likely faster and up to date. I love Adobe products, so I am sure that this is great.