We had an older model for at least 10 years, and needed to replace it.  I believe it might have been because we forgot or never read about changing the filter.  Anyway, we liked to so much, that we bought a newer version and it works great.  Came fully packaged (I was able to register it), and works great.  

Pros: I love that I get fresh ground coffee and I have found our forumula for making it perfect for us.  We like a strong decaf.
Cons: You should replace the filter and we are generally too lazy.  This time we will be more cognizant of that.