I have a
FS91R, depending on how you are going to use it, it has the option for bike handles (
FS91) for about $40 more. I like the ability to swap between trimmer head or metal blades. If you are going to be using it for a while at a time, I recommend the
backpack strap over the
sling strap. I also have an EGO trimmer which is battery operated. My wife doesn't like using gas trimmers, but really likes the EGO. It also has an easy loading string head that allows you to feed in a length of line half way and then hit a button on the head and it sucks it in. Ready to use in about 30 seconds.
I don't care for the FS94 with the adjustable trimmer speed, I can adjust speed with the trigger just fine.