Question Best vacuum robot around 300 euros (330 USD)

[sbiriguda]

Hello, as per the title, I would like to get a robot cleaner around 300 Euros (330 USD) or perhaps little more. Which ones are the best? Which features should I look for in these devices?
Thanks

 

[MRCFT]

What do you expect from a robot vacuum cleaner : Just sweeping or sweeping & mopping ?