I've got SH displays & have had good luck with them, they have the embedded charts but for more detail I use the c-map + charts. Not sure I would want touch screen after trying to use my iPad while being a passenger in a car, if it got rough out it may be problematic to touch what you want. Good luck
Ron on Northern Lights II
I don't like making plans for the day because the word "premeditated" gets thrown around in the courtroom.