I bought this product in mid September 2019. Have used it about 4 times on a total of 16 grass edgings. Spool has already run out of trimmer line and had to be replaced with a new spool. Not impressed!!! . My previous trimmer was a Black & Decker "Grass Hog" with a double string spool. Always lasted a long time before requiring a spool refill. Was an excellent piece of yard/garden equipment. I really miss not being able to replace it with a new model that works just as efficiently.
Had a B&D trimmer for years and just packed it in. This new one is very powerful and although I've only used a couple of times so far it's great . If it lasts half the time my old one did it's a good buy for the price.
This is the first weedeater I have purchased in several years. I am amazed at how the technology has improved. This very inexpensive and very light unit has great power for its' size. The self feeding line takes a little getting used to. It works well once you get the hang of it. It only holds 30 feet of line. If you re-wind the spool yourself, you have to be very careful to wind the line so it does not overlap on itself, or you can buy already wound spools. I can weed-eat the front of the lawn and down both sides of the driveway (approximately 120 feet) using about half of a spool. I guess the best quest to ask is, would you buy it again? The answer is yes!
Still not sure about line feeding and usage - have high hopes. It did appear to run out last usage, but this was incorrect - it just got cut off. It seems to be a lot better than earlier B&D trimmer/edger who line handling was horrible.