Update after 5 months of testing 2.0:
I have to say I still like 1.7 better for its intuitive “acting directly on the file(s)” feeling and no need for any online interface, initially or otherwise. The 2.0 interface feels detached from its actions, like an automatic transmission, and I like the manual feel without as much slickness.
I’m now switching back and waiting for a potential 1.7-like 2.0 successor. This is not to say 2.0 isn’t as good as competitors, just a preference on my part.