DeviantArt is pretty good, there’s a few of us over there (myself, Kaldath, AMS, Vampyrist to name a few). In terms of uploading heromachine stuff on DvA, there aren’t any major problems, you aren’t going to get as many plaudits for your work over there as you are here, but it’s not a site dedicated to heromachine so that’s understandable. They have a favouriting system, which the forums don’t have, so you can keep tabs on art you like. Oh and I run a heromachine group over there as well (not a shameless plug for the group in any way shape or form). However, one thing I would say against DeviantArt, is that I actually prefer it here. I only really use DeviantArt for looking at other art and I only very rarely upload over there (which is ironic considering how much I used to upload when I joined), mostly because it’s more fun to upload here. There isn’t as much of a rapport over on DvA, because, of course, there’s so many people doing some many different art styles, most people don’t care about what you’re doing. At least here people will comment and you can chat with them about your work or their work and they’ll actually be interested/ reply.
I’ve never used tumblr as an actual user, I just browse certain threads of artists I follow on DvA, so I can’t really comment on that, but I’d say you should join DvA, if just so I can go on a fave-spamming spree.
He looks the type.
He looks the type.