Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not buy this mouse

Wonderful ergonomics. Super features. Zero reliability.I have owned two of these mouses. The first one didn't work out of the box. I didn't get it sent back in time, so I'm stuck with an expensive paper weight. The second one appeared to work fine. After about 2 weeks, my computer started rebooting at random. Then, all the USB devices on my computer stopped working. Switching to another mouse solved the problem. (A bad USB device can cause these sorts of problems.)I have used Logitech mouses for a long time but will not do so any longer. Logitech seems to be doing great on ergonomics and features and very poorly on reliability. I bought this mouse to replace the last geneneration, top-of-the-line Logitech mouse, which was failing mechanically after about 6 months.