i cant deciede what extended hedge trimmer i want, the stihl hl75 or hl75k. the hl75 has a 59" shaft and the hl75k has a 42" shaft. what would be more convenient to use. i already have a ht75 pole pruner and an hs85 30" hedge trimmer. i want something in between i was leaning towards the 59" but am thinking the length may be too long. what do you guys think??