I love the layer comps feature. It's a huge time saver and allows me to keep my files sizes smaller.
One thing I just noticed since I normal hand off my PSDs to a developer is that the slices don't save with each layer comp. Is there any way to make this possible with CS5, 6, or CC even? It'd be a huge time saver and really helpful. I currently use CS5 at work, but I have CC at home.