Although I've only used this head one time, I love it! I bought the pack of Tanaka string line, also on Amazon, for 6 bucks which pushed the total just over $25, making it eligible for free shipping, which made the string "free". As the other poster mentioned, this product seems to be of high quality and should last a long time. I have the peace of mind that I won't be trimming a hundred yards from my house and have to stop and tear apart a complex bump-feed head and mess with the #*$&%@ thing for 20 minutes. The Tanaka string is very quiet and very tough, I use it for edging and it lasts a long time, just carry another string in your pocket in case you need it. Excellent!!