I started with the raw datastore API and was able to do what I wanted after quite a bit of research and trial and error. I was then turned on to Objectify and

I started with the raw datastore API and was able to do what I wanted after quite a bit of research and trial and error. I was then turned on to Objectify and couldn't be happier. I know what is going on underneath and the limitations but I have a much easier way to deal with them. Objectify is highly recommended, but my app doesn't have massive scale so I am not sure if it adversely affects performance much.