For my own experience, I have no lawn but 200 m of grass that I let grow without worry about it for a few months. My owner lent me his electric mower that crossroads prize floundered in minutes. A neighbor lent me his heat but it proved ineffective and has failed (no chance). So I opted for buying an electric mower Bosch and I must say I'm quite satisfied for my first use.
Think however to have a great extension for the disadvantage of an electric mower is mainly the thread with which we are forced to juggle while mowing and to be careful not to cut if you accidentally spend it.
Conclusion: Good buy, and cheaper than in stores (about 30 euros difference to my purchase date which is not negligible).