All-in-one (AIO) desktop PCs are computers that integrate the PC hardware within the chassis of the monitor. At the moment, there are three major vendors with significant market share in this segment--a report pegged Apple's iMac as the current leader with around 33 percent share. This is followed by Lenovo and HP.

Although market share isn't always an indication of quality, we believe that Apple has a strong case for having the best AIO desktop PC in the market. The iMac uses an IPS panel for better viewing angles and picture quality. Besides competitive hardware specs, it also has an elegant and attractive design.

However, if you require features such as a touchscreen display, you could consider other models, such as HP's TouchSmart 610q. There are many models for different budgets available in the market. It's best that you decide on a budget and check out some reviews before purchasing.