New here. I don't know of anywhere else to seek advice on this. So here we go. I volunteer for a small charity that do conservation work in the Scottish Southern Uplands. We currently have relatively low grade "strimmers". An old Hitachi grass trimmer and a newer Stihl FS70. We need to invest in a serious upgrade to tackle forests of Gorse. Our Lantra trainer recommended the Stihl 400 series because we will need the mulching blade and scratcher blade kits. The question is