Ladies and gents, I come with good news. The testing is complete...
My findings regarding using the Advanced function remote on the Dolphin Z5 are:
-The delay function doesn't appear to do anything. The robot begins cleaning as soon as you click enter.
-I don't know that the cleaning time (short, med., long) have any function. I'm too impatient to time it.
-The waterline focus selection absolutely without a shadow of a doubt makes the Z5 focus on the waterline. Video of this, as proof, below.
-All of the "focus" functions appear to effect the Z5 the same as they do on the M5.
In my humble opinion, as a pool owner with dark blue tiles, I think the remote is worth the 100.00 asking price for the tile function alone.
https://youtu.be/A7gLGA8Wzbc - youtube neutered the video quality...I guess I should have selected HD...oops.