It depends on what you want from it.
I use it a great deal as it covers the counties I need, which ancestry doesn't.
It also has all the Diocese of Lichfield wills, which other sites don't.
I also like the fact it's an English based site as opposed a US based one, and I like the way it works much better than Ancestry.
It's getting used to the new format I think.
You need to check which is best for you - findmypast or Ancestry.
I also use familysearch.org a lot. Especially as a first line of enquiry.
They have digitised microfilms of the registers of many places which are free to view , and can be viewed at home if you're lucky. Sometimes they can only be viewed at an LDS library, which I should think are the moment are not open.