Lawnmower for decent finish on small lawn.
 

Having laid a new lawn two weeks ago I'm now looking to buy a new
lawnmower. I already have a petrol mower for my big front lawn but
this is just too heavy to lug around the back.

The lawn is 75sq metres, flat and of a fine seed grass variety. I'm
looking to get a decent finish but don't want to go as far as stripes
as the lawn is a funny shape so stripes would be a pain in the ****
and would look odd.

I am happy to mow twice a week or more if required.

Any suggestions for a lawnmower? Budget up to £100.