I have an old 130r. I think it was from the first year they were introduced. Straight shaft. Best starting stihl I have ever owned. Will start first or second pull every time. Mine accelerates very quickly with enough torque to twist in your hands. Its two main faults are its lack of throttle control and its tiny fuel tank. For the throttle, it is either at max or idle. It is very difficult to get it to run anywhere in between. Since I was taught to use a trimmer with just enough spin to cut what I am aiming at, I really dislike the unit for trimming.
As a brush cutter, I have beaten the snot out of it and it has never given me one wiff of trouble. I have the articulating hedge trimmer for it and it has made me a lot of money. I have also heard good things about the scythe attachment. Chainsaw head attachment will not work well on the solid shaft as it would have no reach without the intermediate shaft. I have an ht131 for that type of work but it starts hard. For less money than the chainsaw attachment, you can get a quality pole saw that will have greater reach and versatility.
While a decent unit, the 130 is no match for the fs250. The 250 is a far superior trimmer, dynamite brush cutter and no stupid flippy caps. A true hallmark from the days when stihl made a real tool. Only problem with the 250 is that you cannot use the other attachments. It would probably eat them.