I haven't used any of their digital bodies, but i'm sure having the anti-shake functionality in the camera body is nice.
I have a Konica-Minolta A2 that uses the anti-shake system similar to that of their DSLR. It works very well. I thought I would use it most often when shooting at the equivalent of 200mm, but find that its best use is when shooting in dim light. The ability to shoot at 1/30 second and get a tack sharp image is very nice.