Can anyone recommend a strimmer with the following requirements. Must be mains powered because I can't get batteries on and off; must have plastic blades because I can't manipulate the mechanism for a cutting spool and the flimsy plastic wire keeps breaking anyway; doesn't need to be heavy duty as I can't lift anything too heavy and it's only for grass and light weeds. I bought a cheap one last year which is utterly useless so I'm willing to spend up to £100.