When buying a new computer you basically have two options: you can either buy pre-built or you can build one yourself. In general the latter will almost always result in better value, performance, and upgradeability -- perhaps the only exception being basic entry-level computers. But going the DIY way also requires knowledge, research and free time. If the process of picking parts and building something yourself sounds right up your alley then our PC Buying Guide is a great place to get started. If you need something that works out of the box and is backed by its manufacturer’s service and warranty, or are simply looking for something to recommend to your less DIY-inclined friends, then this is for you. We've weighed dozens of expert reviews against our own research and tests, to bring you our picks for best pre-built all-on-ones, gaming systems, small form factor and budget PCs. Read the complete article.