What main features and functions should I look out for In a hand propelled lawnmower?

All hand propelled lawnmowers will have…

• Sturdy construction
• Strong metal blades for a neat and even cut 
• Decent running,  gripping wheels/tyres
• Quiet effective operation

Other features and functions vary enormously from model to model from the very basic simple cylinders, which cut and distribute, up to those with grass collectors, and many other features.