Jackie is considering making "the switch" to an iMac. Leo says he prefers the Mac, but there's really not that much difference now between Mac and Windows. It's largely a matter of taste. Buy business grade hardware and it'll last. Not all PCs are business grade - a lot of them are low quality consumer grade computers at low cost.
All Macs are business grade, which is why they tend to be more expensive. It's more elegant, easier to learn, and more secure. Leo believes that Microsoft has taken a wrong turn on Windows 8, and it tends to be more frustrating. So at the end of the day, while Leo says there is really not much difference, he advises getting the Mac. If she needs to run Windows, she still has that option, too.