Jane..how big a lawn to you have to cut??
The homelite lawnmower you mention is 145cc which is almost equivalent to a 3.5 horsepower motor like briggs and stratton etc.
My dad bought this one:
http://www.woodiesdiy.com/productdetail.aspx?pid=7425&loc=P&catid=102.10.1
Its got a 6 hp briggs and stratton engine and is a better engine versus the american homelite engine type.
That 6 hp will make it a much easier job to cut the grass if it gets long od damp etc. For the extra 50 euro its worth it.