I rather like Reinventing Hell as it's an album I feel I can dip into. I've tried listening to their studio albums, and there doesn't tend to be enough on there to keep me amused. One of those bands that, for me, a greatest hits is necessary I'm afraid
That said, the same holds for Eagles, and I love Eagles, and I do like much of Pantera's music... just not a lot of it, and not all at the same time.