Neither.

Though there's no reason you can't have and run multiple accounts.

I started up a Tumblr to increase my visibility. All I'm doing is sharing stuff I'm already posting on DA.

I also tried other art sites, but to be honest: though I would love to trash DA into the ground (and I often do), no other art site has compared.

The closest was the now-defunct SheezyArt.

Nabyn also closed down so that helps, but when it was up, the site was ill-organized.

Elfwood, while it was truly lovely, appears to be dead now, too.

Weasyl is okay, but you likely won't get any more comments from folks than you already do on DA.