I <3 my high res matte. But I really wanted my future laptops to remain Macs. I love the OS and the build quality. The battery life too. But in going ultrabook with their Pro line and phasing out the 17" variety, they've simply abandoned me.
The reason I bought a MBP over an HP Elitebook/Dell Precision was because I couldn't get 7 hours of battery life out of another 17" laptop with a good screen, cpu and gpu. Yes, the Elitebook and Precisions would have been more powerful with far superior screens, but their build quality wasn't comparable, and those workstation GPUs keep battery life to that 1-3 hour range. While being bulky and heavier. With the MBP everything was good enough, and the battery life tipped the scale. I never looked back.
Now they basically don't even make a MBP for me. the regular 15" is too low-res for me, as I'm used to 1920x1200 (had that res for the last 8 years on my laptops) and the Retina MBP's expansion ability is too restricted.
Sorry I keep talking about it, but it's because I'm really sad and absorbing this new reality. Without expandability, the balance tips back to the Elitebooks. I'd rather deal with 2-4 hours of battery life and an extra 2 pounds but the benefit of a 17" 100% Adobe RGB screen, space for 3 HDDs, 32GB max RAM and workstation-grade graphics for the same price as a retina restricted Retina MBP. ...and I'm really sad about it. Just when I was getting used to the Mac world (2 years into it) I feel there won't be a 3rd year.
edit: oh the SSD isn't soldered on? I was under the impression that it was. if not, that's a really good thing. but the RAM limitation is still a deal-breaker, I think.