Helmet interiors are all a matter of preference, as previously mentioned. I went with a padded foam interior as I find that a hard hat liner gives me a pressure headache after a few hours of wearing the helmet, and I much prefer the snug fit/feel of the foam.
I also prefer foam to a hard hat liner. My Jango helmet has only about a 1/4" of padding in the front/back and on top only 1/8" as I have a large head. But still, go with foam padding. The hard hat liner can give you a headache and a sweaty forehead.