I'm thinking of switching from Shindaiwa, to Stihl 4-mix, I have always liked Shindaiwa but the new 231,261,272 are JUNK. I thinking about going with the FS100RX, BR 600, but I'm not sure which edger. The FC 110 looks like it would have tons of power, but heavier than what I'm used to. Does anyone have the FC 75 or the FC 100 edgers, if so how do you like them? I'm also looking at the split boom.