Dave does such an amazing job, I really love them all. And I am always impressed with Dan's masks because he has a big hand in the design (since he draws himself).
I really like Chet's mask with the Predator logo and Admiral bones. It looks really cool and blends both teams together (though he's never played for Nashville). It also helps that it is "fresh" to me since I am not used to seeing it.
I also love Ellis' "rage of Preds" mask that he is currently wearing. I'm a big fan of skulls so having those on the mask with the buff looking predator is really awesome.
Then again I do really like Pekka's current mask too. The shreds look great.
The only ones I don't really like are both Pekka and Ellis' old ones. They have too much yellow for my taste, which I know is a Pred color, but still. I'm not a big fan of those. Pekka's looked boring on the side without the lion, too.