The way they advertise this makes me think the old version is a horrible, slow, piece of junk.

After having spent the better part of two decades working with RDBMS I tried mongoDB on a couple projects and found it has a place in the world, but a fairly narrow use case where it actually simplifies things rather than making them more difficult.

As always I'll wait for an update or two and let someone else try the shiny new features before I try it out.