Apple targets people who want their computer to look pretty. Lenovo targets the people who want to get stuff done.
Want to quickly scroll through a document? page up/page down/home/end buttons? Lenovo's got it. Want to change the volume easily and still have access to f1-f12? Lenovo's got dedicated buttons for it. Spill your drink? There's a good chance your drink harmlessly poured out through holes in the bottom (damaging at most the keyboard).
Need more battery life? Buy a second battery and swap them when the first runs out. Need more ram? Just open it up and put it in. Same thing if you want a new HD/etc.
Combine this with great linux support [1] and Lenovo is a clear win for me.
[1] At work we have macbook pros, getting it to work with linux was a disaster.