We replaced it with a System76 Bonobo Extreme with the following hardware:
- nVidia GeForce GTX 870M with 6 GB & 1344 CUDA cores
- 16 GB RAM
- Intel i7-4810MQ (2.8 GHz, 4 cores)
- 17.3" 1920x1080 matte display
- Ubuntu 14.04 LTS 64 bit
So far, the new system works beautifully for Blender. It doesn't have any trouble editing and displaying complex objects with more than 100,000 faces/vertices. And it's a little bit faster than the Kudo (1:37 to render the BMW vs. 1:43).
GPU rendering is actually slower than the CPU rendering, but I think that's because I'm using an older driver (331.38 which is part of Ubuntu 14.04) instead of the latest which is designed for the GTX 870M card (340.32). I plan to try again once Ubuntu 14.10 is released in a few months.
One cool thing: The backlit keyboard is nice and you can cycle through different colors as in the pic at the right.
One not-so-cool thing: The touch pad is so large that it picks up my palm movement when typing and moves the cursor around, sometimes leading to bad typos. I usually just use a mouse connected with USB and turn off the touch pad with fn-F1.