For me decisive was the high flexibility of the GTE 450, on the setting of the handle and the rotatability of the motor and thus of the thread. I am also interested the small spinner that accurately maintains the distance when I run the trimmer vertically to cut the lawn edge.
The device feels very sturdy and has a cheap part, as I had previously, can not be compared.
For the price of GTE 450 is a clear recommendation for me.