Chart Component Required

I am trying to find a component that will do more than ChartFX to
meet my particular needs.  Maybe these things can be done in
ChartFX, and I just haven't worked out how.

- Ability to change the Tic labels on the Y-Axis to Text Descriptions
  (e,g, 1 - Low, 2 - Medium, 3 - High)

- Ability to highlight variances between 2 lines, or at least the ability
to easily draw graphics onto the chart to indicate variances
(e,g. Shaded Vertical Rectangle).

- Zooming (optional)

If anyone knows of a good component that can do all this, or how to
do this in ChartFX, please let me know.

Thanks

Rick