Marumi makes very good filters, at competitive prices. The difference between DHG and Super DHG is the easy-clean multi-coating, but if you've ever tried to clean off dried-on rain drops, or (far worse) sea spray - then you'll know the extra money is well spent. Hoya Revo is similar.
Top of the range is Marumi Exus, that uses the lighter-toned polarising material. It's about half a stop lighter, around 1.2 stops compared to the 1.7-ish of regular polarisers. Handy if you need to keep shutter speeds up. Hoya HD is similar.