I signed up for a 14 day trial of Ancestry, and started to rummage around with the Censuses and liked it so much I bought the company... erm, I mean I subscribed, but it felt like I'd bought the company!
Lots of useful info and a good online tree program, but pricey and not the best indexes (indices?) for the censuses (censi?) but I still like it
Findmypast is very useful for families who travel a lot, unlike mine.
Don't forget all the free stuff out there, especially familysearch and freebmd. And Rootschat as well
Glen