I have a few Stihl trimmers I use different trimmers for different purposes "Like everyone else I'm sure"
FS80 (same power head for lots of older stick units, including pole pruners) is a great all around trimmer
FS90 good i use it for slightly heavier trimming
FS110 is what I use most excellent power to weight ratio blade or line
FS130 a beast mainly used with a blade no to keep line on this machine it's a torque monster
FS250 and FS550 mainly used with a shredder blade or Aero blade used to destroy buildings, truck tires (yes it has happened), fences, small saplings, bushes, vines, thick grasses, etc etc
HT131, FS80 (4), FS85 (3), FS90R (2), FS110R (3), FS130R (2), FS250 one bike, one loop, FS550 ("aka the Beast"), HL110k (2), FC110 (2), BR420 mag (3), BR600 Mag blowers (3) , 192T (2), 200T (1), MS290, MS261 (2), 660 a beast
880 more saw than anyone in Florida prob needs