I've had mine since Christmas and love it. Haven't tried any heavy duty sewing with it. It sews one layer of denim with two layers of cotton, but that is the heaviest I've used it for. Love the FMQ on it. It does it sooooo much better than my old machine. My only complaint is that it wasn't sdesigned to be dropped into a table, buttons are too low, but DH worked that out for me, so I love it.