Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Stay away from this model

I've had problems from the beginning. The first unit I received looked used and had parts missing and broken. Customer service was great, I got another one in a couple of days with the same issues broken and incomplete packing. I was able to get a working unit out of the two that were sent. The biggest complaint now is that the handle will not stay attached to the tank I have a "portable" unit that is anything but portable! I cannot move it anywhere without reseating the handle every couple of feet! In all not worth the aggrevation.