|All fleece, all the time (with extra layers under the hay rack)|
I love the multi-colored fleece, especially ones that are brown, black or dark blue, because they hide the poo so well. Keeping the cage dry was a bit of a challenge with a really leaky rodent. I learned to keep an extra layer of fleece or a cuddle cup under the hay, since that got soaked so quickly. Some areas of the cage need an extra layer of towels underneath the fleece.
I think the pigs have been happy with the switch. Fleece has great traction compared to shavings. A guinea pig gets more air time when popcorning on fleece. It also makes leaping up to the second level easier, there's less of a chance of wiping out. I still have a partial bale of shavings in the basement as backup, but I haven't had to touch it in over a year. I gave away the other bale I had bought a few months after going to fleece, since there was little chance I was going back to shavings.
My biggest problem with fleece? I've been reconsidering expanding the cage again. Hmm. New coroplast, redesigning the layout. And of course, that will require more fleece. It needs some more thought. I'm sure Pinniped and Cannoli would heartily approve if I were to renovate.