Hey there!
In short: I design + develop for the web. I'm using a Macbook Pro Retina now for a week.
Still unsure wether to keep it. The performance is great. Starts up and restarts really fast, a big upgrade compared to my old Macbook Pro 17inch (2009).
While not every app is retina ready yet, the text on retina screens is really pleasant to look at. In the week I'm using the Retina macbook with 27" Thunderbolt Display which is a pleasure to use. A lot of workspace. In the weekend when I'm not home, I use my Retina Macbook to continue some projects: coding + designing. It's not 100% but it works fine.
From time to time I come across weird glitches.
- Vimeo player fullscreen takes up 1/4 of my screen -> bummer
- Flash websites look bad, just like any website with low-res images. (yes, I clearly understand why). Text on the otherhand is a joy to look at. Really sharp & smooth.
So if you can wait for some apps to catch up the Retina screen + you work with an external screen most of your time, it's a joy to use. I wouldn't recommend working on it full time without any external screen. If you choose higher resolutions, everything looks a little more blurry and lowers the performance.
Setup:
http://cl.ly/3U1o1C043Y0N3k1M2z2i