I also asked myself the question a few days ago and despite all my affinity for technology decided against a robo and ordered a Makita DLM432 battery mower. Unfortunately, it has not been delivered yet, so I (still) cannot say anything about the handling...
The Husqvarna Automower 305 from last year is currently relatively cheap! Around 700-750€. Plus 150€ for the installation set and then you have something solid for up to 600m² of lawn area.