We recently re-sided w/ the Hardiplanks. I really like the look and our house is quieter (we previously had aluminum siding) -there is no crackling w/ the weather changes. Our house already had brick on the front.
A neighbor did their whole house in Nova Brick. It just looks too monotonous - you also don't see a grout line which I prefer the look of. Anyway, I say either just brick the front w/ Nova and use Hardi on the sides and back - or better yet - do a combination of Hardie and Nova on the front and then just the Hardie on the sids and back. I would also suggest to wrap the brick around the house about 1-2 ft.