I really like fleece. Sometimes it is, admittedly, a bit of a pain to try and get all the hay (I've given up on keeping the hay in one spot) off it before washing (now I just fling it in the washing machine and don't care if there are still little bits on it), but I find that I much prefer it over other bedding. It's a lot easier and quicker for me to do the daily poo pick, my piggies seem to prefer it, it's less expensive in the long run, a lot quicker to do a full clean out, less waste (not got the bags and bags of used woodshavings to get rid of), and the main thing for me is that, allergy wise, it's a lot better. I found that I really struggle with wood shavings and aubiose due to the dust. It was constantly making me sneeze, and I really had a hard time when it came to cleaning them out. I'd say it also smells a lot less.
I do a complete change of the girls' cage every four days (the cage is smaller and the girls are only babies and so much messier xD), and the boys' cage once a week. I think it's worth perhaps making your own liners first to test. You can get cheap fleeces from places like Asda or B&M, and also cheap cotton mattress protectors to use as the inner material. It's a loss less expensive way (even if you just fold it all together to be begin with rather than stitching) than buying ready made ones, and it's not such a big deal, then, if it isn't right for you.
Again, it's down to personal preference and what fits in with your life! The downside is there is a lot of washing.
