"I ordered an E30 last Fall, after an extensive comparison with other workstations that included Sandy Bridge processors (I have E3-1245). Reasons for ordering a Lenovo workstation was that it was supposed to be very quiet (it is), should work well with linux (it does, at least installing Debian was a breeze, and has, e.g., perfect suspend/hibernate support), and that there was little extra cost for a NVIDIA Quadro 400 (which has dual-dvi and could thus drive my 30-inch Dell monitor). I also liked in particular that, at least at the time, there was an explicit option and a ~$150 discount for *not* having Windows installed. (I don't see it anymore, but if this helps you, do ask). Only a much smaller discount was offered by Dell, and I don't like paying for what I will never use. I did order a system that included only a small (500GB) hard drive and relatively little (4GB) memory, as it was far cheaper to buy those separately.
In practice, the E30 has been as good as hoped for. II already ordered another one for one of my students, and am in the process of ordering two more for others in my group."