Please confirm: Is Windows Workflow Foundation a good horse to be backing right now?

Question

We are in the process of selecting a workflow solution for a company that uses Microsoft products end to end. Given the news on WF4, in that it seems to be essentially a rewrite

Answer 1

I don't know why people have such negative impressions about WF. Sure it has it drawbacks, but I thought it was pretty useful. The one major issue I have about it is the lack of support for upgrading existing workflow (bullent #2 in gbanfill's list).