I tried Dynalist and moved back to Workflowy literally a couple of days ago. The main problem for me was that you can't link-share an arbitrary bullet and it's children — only the whole document. So if I need to share a link, I have to create a new document just for this purpose. The one-document model of Workflowy just seems more logical and simple. Although the free version of Dynalist is more complete/usable, so if you don't really care about sharing, it's better (for example, no limitation for created nodes per day).

And obviously they are both missing vim bindings, which I would LOVE to see.