My personal view is that its probably better to take smaller doses of two drugs with different actions as opposed to one at a higher dose.
So, perhaps, a smaller amount of an agonist (Mirapexin or Requip) which reduces risk of ICD (compared to a larger dose) and a small amount of levadopa which is likely to delay risk of dyskenesia.(again compared o a larger dose.)
In my case I take Mirapexin CR 1mg daily and one Sinemet Plus (100/25 mg) 3 times daily. Seems to manage my motor symptoms reasonably well.