Is there a substantial difference between Aldi/Lidl hedge trimmers and those made by Bosch and, next up in price-quality I suppose, Viking/ Stihl ? I have had a Lidl for three years and each year end up doing the job with hand shears. It seems powerful enough, the blades are self-sharpening(?), it is not too heavy but it just seems to push the leaves and twigs away instead of cutting them. Before I invest in a better one I would like to know that it really is better at cutting. (I am less concerned about other qualities, like long-lasting.) Advice please ! Rob