That said, this model does not upgrade its CPU from the previous fourth-generation Intel Core i-series to the current fifth-generation chips (as seen in the 13-inch Pro and Air), so the year-over-year gain is minimal. This is a premium laptop, and you can rightly expect premium performance scores from it. In 2015, every Apple laptop, save for the two Air models and the lone 'classic' MacBook Pro that is surprisingly still available, has a better-than-1080p display. The Retina screen has a 2,880x1,800-pixel resolution, and is best demonstrated when displaying text or professional high-res photography. Still, it remains a main selling point here, and it looks as clear, bright and sharp as any high-end laptop. The 15-inch Retina Display was forward-looking when first introduced, but now better-than-HD screen resolutions are common in laptops across many sizes and prices. On the other hand, it's so seamlessly done, you might never notice the difference. On one hand, it's a brilliant bit of engineering that will help future laptops be thinner, with fewer moving parts.

That deep click feels to the finger and brain like the trackpad has a stepped physical mechanism, but in fact, the movement you feel is a small tactile haptic tap, which, even when fully explained, still feels like you're depressing the trackpad two levels. The four sensors make it so you can 'click' anywhere on the pad's surface with identical results, and the Force Click effect, which combines the sensors with haptic (or 'taptic') feedback, allows you to have two levels of perceived clicking within an app or task.

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