Ehlers Instantaneous Trendline, by John Ehlers, identifies the market trend by doing removing cycle component. I think, this simplicity is what makes it attractive :) To understand Ehlers's thought process behind this, refer to the PDF linked below.
There are atleast 6 variations of this ITrend. This version is from his early presentations.
Is this better than a simple HMA? May be, May be not. I will leave it to you to decide :)
I have added options to show this as a ribbon, and to color bars based on ITrend. Check out the options page.