Well after long hours of deciding if I should go ahead and upgrade my oh so recent purchase of cs3 to cs4, and after using the trial a little I went ahead and upgraded. This is to anyone who is thinking about doing this while low on cash.
I suggest unless you're a little more into web design or working on serious projects that require that extra detail, you really don't need to upgrade.
Some of the features may have seen or may have heard about such as the bone tool or the 3D skew tools are really some of the only good additions to the upgrade. A few others include the Deco tool which can create vine like structures with pre made or your own made symbols. The spray brush tool which works much like the spray can in paint but has much better features like adding width and height to the spray.
The 3D tool isn't exactly like I high quality 3D creator like AutoDeskMax or swift3D but it allows for skewing objects that you might have combined. ( the first thing you can make with this that is fun is a box.) it's pretty neat but nothing I would consider important, although if you animate it can save you lots of time.
The layout is what really caught my eye. It's not like regular run programs with the file, edit, view etc.) it looks much better is what it comes down to.
So for $200 you could upgrade, and like I said if you are feeling frustrated with really trying to decide the trial is up at adobe like always, and it's "Neat" but really your not missing very much.
any other opinions to help others decide I'm sure would be appreciated.