I just got the 13 inch Retina display Mac Book Pro. 2560x1600 in a 13 inch screen is really bad and makes literally everything else I have in my house look terrible my comparison. Also the SSD is mega fast (some PCI-e based thing that's apparently faster than SATA) and having Thunderbolt 2 and USB 3 wipes out the need for an internal HDD because that's plenty fast enough for data transfer. Also, its the only laptop that I had that managed to underestimate its battery life - its apparently 8 hours, but I got 10 out of it even though I was streaming either podcasts or youtube for most of that. Helps that I got the education discount + the ?48 Applecare which paid for itself on my old 11 inch Air within six months...
Not 100% sure about the value of Apple's desktops, but their laptops are the best thing IMO because of the battery life, the weight and the screen. There's the "THEY DON'T PLAY GAMES!!!" thing; but Civ 5 works very well, I could install Windows 8 if I wanted to (lol) and anyone who buys a laptop solely to play games in is dumb because gaming laptops sound like my Dad's snoring when on, get about 2 hours on the battery if that and weigh a tonne... I would pay lots of money for a Retina iMac if they ever did one though; because that would be the best thing ever...