19. Apple iMac (27-inch)
Click here to Buy it Now from the Apple Store, $1,800 - $2,000
How do you improve the best all-in-one computer? If you're Apple, you figure out a way to remove all the unneeded elements like compact disc drive and work to make it thinner and lighter, as well as faster. All of that happened with the new iMac. Razor thin at the tips, with a new display that allows for better viewing angles, it's a remarkable upgrade.
Performance is stepped up a notch thanks to the latest Intel chips and a new technology Apple's coined Fusion Drive which works to meld together the hard disk and the solid state drives to create one large hard drive that's leaps and bounds faster than traditional drives. Yeah, we call that an improvement.