I'm a comment person too. I think it is good when artists can communicate and have discussions about their skills (whether they're getting better or starting to suck). Sometimes you get wackos, but I saw the user/lisence agreement and I still signed up for it anyway.
oooh tricky one lol hahaha polls r always so hard ok so pageviews and deviation views are out so choose watchers! favs r cool but they can fluxuate alot and don't really give you an accurate account of how well you are doing. watchers mean that people like ur work and wana see more ^^
I like comments more definitely. Reading comments and feedbacks from the kind watchers makes me feel warm and nice inside. Of course confidence boost as well.
Pageviews. Recently I found out that you can turn it off so I can't see pageviews at all the deviant pages I have visited, including my own. Only turned that on when I want to catch a Kiriban.
Favorites. I want to have the option to turn that off too but DA haven't thought of implementing yet. : (
Watchers. Seeing watcher list increases also is a sort of a morale booster. Meaning people want to see more from you. Yah, I like it too. You never could have imagine that the person who watches you might ended up as one of your best MSN chat buddy.
Deviation Views. Actually, I'm very oblivious of it.