I did a lot of research into bedding before I got my piggies as I wanted to make sure the cleaning out process would be as easy as possible and that the boys would be happy and comfortable with it.
I considered fleece but as I live in an attic bedroom and don't have access to a garden I wouldn't have been able to shake it out well before putting it in the machine or hang it out to dry anywhere. (Also some people suggested you should do an empty hot wash between the fleece and your own washing which would have added to electric bills which are paid by my parents so would've been unfair)
So having looked at the alternatives I reduced it down to Fitch or finacard - they both seemed to have their merits and I'm not 100% that one is better than the other but I plumped for Fitch as it looked softer and seemed like you got more for your money. I've only been using it for 2 weeks but so far I really love it, it's very absorbent and the boys look really comfy on it, can't imagine anything being softer for their little feet! Afraid I can't comment too much on odour control as I have a terrible sense of smell!
Hope this helps - good luck