thanks for the response, Joe - I did admit to being "dangerous" ref the elastic loop..........& no nozzle with the fuel can (I must have lost it). I have to empty the grass box far too often, perhaps because I can't always manage to mow when the grass is dry & the chute/boox seem to clog up faster than I'd like. The Hayter is, as you say, rather low and I don't find it nearly as good as the Atco, which was a rotary with a roller. Lasted for 27 years & eventually they couldn't get spare parts for it. The ground/soil here is very light, so compaction not much of a problem really & I spend so much time repairing rabbit damage that the Atco's roller was very useful. Ref edges - maybe a retractable wider front wheel would work? I used to have a battery driven lawn edger which was quite heavy - you rolled/dragged it along. Worked a treat - but it disappeared some time ago - house move I think, when some stuff was accidentally left behind.
I know what you mean about swearing............... my garden's far from immaculate - rabbits & dogs to thank for that!