Re: 'Flymo'
As Tolivac and Petek have mentioned, the original 'Flymos' were 2-stroke engined. These are still available on this side of the 'pond' for professional use, and are much loved by the operatives who maintain highway verges and embankments, since they can be used continually on steep slopes without suffering from fuel or lubrication failure.
As for overmowing feet, it is usually used at arm's and handle's length, swung like a scythe as one walks, so not a problem in open spaces. (The more inventive highway maintenance operatives tie a piece of rope to the handle, so that they can just walk along the top of an embankment, swinging their mower in a huge arc to cut the grass over the whole bank side). If one is using this kind of mower in resricted spaces then steel toecaps are a must. Yes it must be carried when not running, but these are the lightest mowers in production. The only steel components are the crankshaft and the blade, all the rest being alloy/plastic nowadays, and by the time it is being carried back to the vehicle, it will have very little or no fuel weight.
'Flymo' is also now a brand name for various electrically powered rotary 'hover mowers', which are the type seen in domestic use. very few people over here have big enough lawns to warrant a 'self propelled' or 'ride on' mower (though I have used both). Generally, I prefer a 'human propelled' gasoline rotary mower for most work. The 'self propelled' models are generally too big and too heavy to use in the average (obstructed) garden, though plenty of people have been persuaded to buy them ;-)
Beko.... If you have a small garden with a small lawn, you would be better off with a small rotary 'hover' mower, with the grass box on top or behind (under the handle). The downside of the 'old-style' push mower, is that the front-mounted grass box prevents access to the edges of your lawn where there are obstructions (and in a small garden there is effectively more 'edge' than lawn). Take it from a 'professional', you will spend a lot of time cursing it if you get one. ;-)
All best
Dave T