Yup- had the same issue, was ok for small journeys, get on hte motorway and judder galore at around 60 mph.
Replaced slider pins and unsiexzed a piston on either caliper due to dust rubbers persishing and leaking in water. WHole lot cost me around £100 and a weekend, working loverly now, no judder, car rolls back on hils and feels so mch smoother ( not to mention better performance andf fuel consumption).
For the record, the offisde was sized but putting no pressure on, the nearside was sized as it pressure was being applied, had a job to whince the caliper off. Gtetting the pistions out is another a story, but i can assist on advice if you need.