Thank you for the attachment.
What I immediately see is the axis. It seems that this chart has some sort of double grouping on the horizontal axis - first it is grouped by the Date and then it is grouped by (what I guess is) the Name. Unfortunately the RadChart does not have such grouping capabilities. However I have attached a simple project to demonstrate one possible work-around for this.
Apart from this, I think that you can get everything else you need from the RadChart. You can control the appearance and set a different color for the line, set different point marks, set horizontal grid lines and more.
If you have not yet started integrating the RadChart into your actual app then I would suggest you consider using the RadChartView
instead. The ChartView is a newer control with a higher performance rate and it is generally more flexible then the RadChart.
the Telerik team