I have one site that clearly gained with Panda, it isn't a well paying topic, but it did help cushion the blow of my other, better paying sites that were pandalized and reduced to scraps. The differences I see between those sites are mostly the topic, but also better inbound link profile and more social media engagement. Now you could copy my old articles on the pandalized sites on a newly created blogspot site and rank better than the originals. Actually, people do. It's a mess.