In reply to Rob Exile Ward:
I think you have to decide what you're trying to achieve: Do you want perfect digital versions of your best slides for prints etc, or do you want quick and easy digital copies of slides to view on screen, etc.
I ended up wanting a combination of both so I have two systems.
I take a box of slides, clean them and load up into the old Kodak carousel. I then project them as large as possible onto the biggest screen / white wall I have and take a picture of the image with my camera and fast portrait lens set up on a tripod as close to the axis of the projector as possible. I then run the images through some presets in Lightroom to correct for lens distortion, white balance, saturation, etc. The results are quite acceptable and didn't cost anything over what I already owned. It's also very fast taking no more than a minute per slide for all stages.
For photos I really cherish (surprisingly few out of tens of thousands of slides) I have a Nikon Super Coolscan 5000. But it's slow, doesn't particularly like Kodachrome, sensitive to dust, expensive, and slow.