Does anyone know anything about gardening?

I got this one and I'm very happy with it so far. If you're South, you're welcome to borrow it for a trial run.

https://www.argos.co.uk/product/4196075

Reasons for chosing;

1. 36v - moar power than 18v. Was considering the Bosch City Mower to make use of my existing batteries but was worried about there not being enough grunt for times when I've let the grass go too long.
   
2. Comes with 2 batteries and a charger so I shouldn't have to wait about charging.
   
3. Can mulch as well as collect (most probably can)
   
4. It was available for collection at my local Argos and I'm impatient.
   
   

My lawn is about 40' x 20' and I can mow it at least 3 times on a single battery.