I've also settled on this one as the least sucky.. There are still some issues as you can't easily see your comment history, and there's often a bug when you click a story directly, you can't see the content..
None that I have seen allow one to easily see and track one’s comment history. That would seem to be a pretty desirable feature, but it is not implemented by anybody, which is bizarre.
I’ve tried it, yes. It does indeed rank towards the top in terms of non-suckiness, but it fails one of my criterions on account of not having a native iPad version.
But again, its the least sucky I've found