Got a Macbook Pro Retina earlier today. Not sure if I'm keeping it yet. Despite having used Macs and PC's heavily for over 10 years, I still prefer Windows tbh. But this new version of OSX is definitely a step in the right direction.
Initially, the laptop didn't blow me away. Basically a thinner, lighter version of my 17" MBP (which I'm sad to see they've done away with) but smaller and slightly faster (expected for a new revision, and more so for the cost and lack of connections/optical drive). But upon further use, I'm more and more impressed with it. The screen is gorgeous, but not because it's retina (yea retina is nice but 1080p screens at 15" are generally more than detailed enough anyway), but more impressive is the colour accuracy and black levels.
It scores pretty much perfect with the Lagom LCD test images. Better than my 17" MBP and Dell XPS. Though the black is still a long way off Kuro final gen blacks. On top of that, I was super pleased to see that Optical (SPDIF) out is still actually an option despite not being listed by Apple! So I can still use my Optical to DAC to Amp to headphones set up.
It's also whisper quiet (for now) and runs cooler than my old MBP, so kudo's to the cooling design system.
Lastly, the speakers. Fantastic. Not as loud as my 17" MBP or the XPS (with subwoofer) but mighty impressive. Completely different sounding to the other two tbh. The Retina MBP has a far more audiophile sound. It sacrifices some bass, but in place it gets much more detail, articulation (more acute highs) and a more airy sound stage. A touch tinny but at least it sounds much clearer than the 17" MBP and XPS. The older MBP does have more bass (but less spacial realism and clarity) and the XPS even more bass (subwoofer packs a whallop) at the expense of further clarity.
If I could describe these laptop speakers compared with headphones...
The XPS with subwoofer is a Denon D5000/D7000 modded
The 17" MBP is an Audeze LCD-2 Rev 1
And the MBP Retina is a Beyerdynamic T1
Pretty impressive piece of kit so far. Not sure if it's worth the money yet mind.