You're going to need the best gas grass trimmer if you enjoy maintaining your back yard and prefer to keep it looking its best. Before you get to use your gas lawn mower, the first step is to cut back the hardy brush and vegetation that will choke up your mower.
The only other way to deal with stubborn weeds, overgrown saplings and brush is to do it manually but that's going to involve a lot of labor and hard work. Once you've invested in the best string trimmer you can afford, the return on your investment will be a less labor intensive job and a good looking yard.
They're the best tool for combating weed growth, as the regular use of a trimmer will keep weeds at bay, if not kill them off due to diligently trimming them back every time they start to show their heads above ground.