There is no one "best" approach. It probably depends on the size of your data set, what the initial state will be, and how users are likely to use the control. If you are initializing the chart with all columns, then use a view to filter. Otherwise, if you have a mid-to-large size data set with 10 columns, and users only want 1 or 2 at a time (or something similar), then requerying is probably faster and less resource intensive. Small data sets are probably better to query once and filter with a view.
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