Hey guys, I am about to buy the stilh kombi for use as a hedge trimmer and pole prunner, maybe a back up for the edger and trimmer. My question is do I really want/need to pop the extra cash for the adjustable hedge trimmer head? Is it worth it or is the non adjustable trimmer going to get the job done? Also what are your thoughts on the heads km-90/110/130. At first I wanted the 130 but I don't really know if I need that or will the 90 or 110 do enough. I just want a good solid system to use for hedges and trees when needed, and have a back up if the primary edger or trimmer goes down.