The construction of the product is sturdy and it's easy to use. If you do a lot of maintanence work on guitars it's a handy little tool to have, but if you're not constantly changing strings on different guitars it might not be necessary to have.
It would have been nice to have different speed settings on the winder, but the actual speed of the machine works just fine.
I'd say if you really want a simple string winder that's not manual, look no further