Another vote for Stihl.... I weedeated for 10 years working for my brother and his lawn care business, and call me crazy(I have been many times Lol), but I cant stand using a straight shaft weedeater, so I used the cheapo residential FS-38 curved shafts, and with around 125 accounts total, and doing 15-18 accounts daily, Monday-Friday, a new FS-38 would last me about 1 1/2 years. Not bad for $129 bucks each. One would last a home owner no telling how long. I have broken a few flex shafts in them, and had to replace the bump knob about every 3 or 4 weeks, but that's about it. The flex shafts normaly won't give any problem if you take them apart when you buy them new, and grease the flex shaft with a good marine grease, and pack the tube full of grease as well, and put it back together, they last for a long time doing that, it's is much better than the little grease they come with. The other two guys that weedeated for us, use Stihl straight shafts(FS-56's), I just never could get used to a straight shaft, they turn opposite directions, and much heavier Lol. Gotta love Stihl products