I went after it was open for about two weeks. It was extremely disappointing.
Yes, we are in need of a high-calibre restaurant in the area, but I am afraid this is not it. High prices alone do not a quality restaurant make. The salmon and chicken dinners we ordered were unimaginative, ungarnished, and skimpy (a few asparagus spears with the salmon and a few tablespoons of diced vegs with the chicken). A starch cost extra, so the meal was surprisingly small. The spinach and strawberries salad was highly misleading: there was a grand total of one strawberry, cut up in four pieces garnishing the plate. My partner sent his salmon back to cook more (it was raw inside; not medium as requested), and returned no more cooked than it had come to the table in the first place.
What a shame; I was really looking forward to having a four-star restaurant nearby, but after experiencing JazzWine, I think I will stick to Stonehedge when I am in the mood for a world class meal.