Logitech’s C615 HD ($70 MSRP) webcam hits the sweet spot, offering HD-quality video, a durable design, and some of the features of the higher-end C920 for about $25 less.

Me last week: “A 1080p webcam? Who on Earth would want an HD webcam. This is stupid.” Me this week (after buying a 27-inch iMac) “Hey, my parents look terrible on this Skype call, blown up ...