I use it and like the product.
There is a product review in this web sites product review section.
It's also Newbie friendly.
Apart from giving you the choice of what RPM your boost cuts in the unit also allows you to determine when boost cuts out. This gives you a kind of soft rev limiter or a shutoff control.
The shift light control allows you to use any light and housing for a shift light because the smarts are in the unit e.g. two colour LED's can be incorporated into the speedo instrument lights and your speedo can be a great big shift light (great at night) and you can also build your own shift light housing to suit your custom ride (be different, Evolve that ride).
The shift light controller can be used to drive other functions as well as a shift light e.g. auto-shifter or boost controller, injector bank etc. It's an RPM triggered input to whatever you want.
It's plug and play so if you want to install or de-install everything just plugs into or out of the standard harness without cutting and soldering.
Worth the money? Up to you to decide that.