I have a large, tall hedge which I maintain with a petrol powered hedge clipper. However, I've always found it very difficult to get to the higher parts of the hedge, and using a ladder is hard work and precarious. I pondered for a long time on buying a petrol powered long reach trimmer, but they cost about £300, and it's only a small amount of hedge that I can't reach. So, after a lot of deliberatiion, and encouraged by the reviews here, I bought the flymo.
As you'd expect, it's no where near as powerful as a petrol trimmer. However, it has coped pretty well overall. It stuggles with the laurel parts of the hedge, which is very thick and green, but for other less dense parts it does very well. Even though the battery is on a belt (which is a clever idea), it's still pretty weighty when you're leaning over, but you can rest it against your hip to take some of the weight. It's well enough made and the articulating head is easy to adjust to find the right angle.
So overall I'm pleased enough to give it 5 stars, as it does the job I had in mind. If you had a fairly small hedge, this trimmer might be enough on its own to cope with the whole job. For me, it's a very good complement to a petrol timmer to get to those few, hard to reach spots.