I am a technology teacher in a well-funded technology magnet school. I get my hands on dozens of different machines from different manufacturers. Look at my desk right now:
I can confirm, MacBooks are consistently the best hardware. From the old white plastic MacBooks to the aluminum pro's to the Macbook Air's they are all excellent machines. Their trackpad's are on another level, their keyboards are always good, and the quality of their screen's put to shame many other manufacturers.
Lenovo is my favorite overall on the PC side, but some of the models are duds. The Thinkpad I posted is a solid model. That HP pictured (Envy 15) is a complete piece of trash (horrible trackpad, cheap plastics, dim washed out screen). The funny thing is that the HP has the best spec's (Core i7, 8GB Ram, Nvidia GPU with 2GB Ram) and I hate the damn thing and never use it. Using that next to the much older and lower specced MacBooks illustrates perfect why Apple has it right by prioritizing smart design and high quality materials over specs.