@jerryflyguy So far i like it. Its small in size and lightweight. it seems to be accurate and very functional. I did spray paint the aluminum bed plate with flat black bbq grill paint, and my bed is supported on lt blue silicone heat transfer pads. I am not sure if the sensor is probing over those exactly yet. I want to map those out and see what is going on. I have also been trying to figure out the Unified Bed Leveling vs Bilinear. Both yield that my glass bed looks like a saddle or a Pringles potato chip. I want to try cleaning the bed REALLY well and move the pads around and then check it with a straight edge.
I am still trying to figure out how to configure and use it with RAMPS/ Marlin. I am printing PETG on hot glass with Aquanet. Marlin issue seems to be where you put in the probe Z offset- I had it hard coded in Configuration.h and had it set with M851 and my bed visualizer was all over the map. Once I cleared M851, things seemed more like they should be,. I think that I will put in Z0.0 in the Configuration.h file and set manually with M851 gcode. Probe sensing height seems to be ~2.6mm.
The only thing I do not like is that you can not see the hotend now because the probe is in the way- but i figure it can moved to the back or side later. or just look from the other side for now.