Updated: 5 Best all-in-one PCs

Updated: we've added the stunning iMac with 5K display to our round up of the best all-in-one computers.All-in-ones are interesting little (or in some cases, big) PCs. They're desktops with integrated displays and are often built with laptop-grade parts. As such they've inherited a bad reputation for poor performance compared to their full-on desktop tower brethren. The stigma is not completely undeserved. Mobile graphics cards and processors have always lagged behind those made for personal com