I use my Worx GT edger to take care of all my lawn edging and weed whacking needs. It works great and I can complete the entire job without having to change batteries
It sticks very easily. I have had to stop trimming and use a knife to separate and release the string. I have started unwinding the complete roll and rewinding it before I start. This seems to help.
I have used this worx weed cutter for over a year and find that the line on these spools cuts better than other same size lines and getting these free for life makes it even better.
The spools aren't too expensive, but they don't last too long, if you are whacking near concrete, like sidewalks, and cracks. The spool just disappears quickly. Also, it doesn't feed by itself, you have to stop and push button on bottom. Whacked should have bump loading feature, like most whackers. Device is okay at best.