Just as I thought, some expensive oils and vinegars are lousy and some inexpensive versions are great.
These two were the "hands down" favorites of the panel. Chacewater Olive Oil (750ml) from California has a rich, olive taste with a smooth texture. Melina's Balsamic Vinegar (250ml) from Modena; smooth with a balanced tartness. I pour this "solo" on my salad. Delivered in a handsome linen gift box.