Well I'm using CS3 beta. I like Bridge. I also use Elements 4.
My view of Adobe products is that they are probably the worst designed software applications available, from the users point of view. Adobe seem to be in the dark ages with difficult user interfaces, complete lack of easy right click options and a need to memorise a whole book of keyboard shortcuts. And as for computer memory management, well the whole thing is a complete joke, all of their software gobbling up resources and exhibiting a complete disregard for efficiency.
Having said all of that, I enjoy CS3 despite the difficulties. However, what PS has taught me is to concentrate on getting the best possible image out of the camera, removing the need for too much post processing. As such I find Elements 4 meets my needs simply because my post processing requirements are fairly modest. But even Elements 4 (a design completed two years ago and subject to many updates since) is woefully memory draining.
There are better designed software kits out there, but everyone wants to use PS because it is seen to be the professional's tool.