Robot mowers without boundary wires are currently one of the most exciting developments in the gardening sector. In my test, I directly compared two different concepts: the ANTHBOT M5 as a LiDAR robotic lawnmower and the ANTHBOT M9 as an RTK robotic lawnmower with GPS navigation. Both models manage completely without a perimeter wire and show in the practical test how well cordless robotic lawn mowers really work today. In this comparison, I share my experiences from my own garden, discuss navigation, obstacle detection, edge cutting and set-up and clarify which robotic lawnmower without a wire is the best choice for which area of application.