Lenovo make some nice business-class laptops. I recently got a Dell Studio XPS 16 laptop and love it. I had done some serious model comparisons for features and such that I wanted. It's not a business unit, but is well-built and a suitable replacement for my self-built desktop, and it didn't come with too much bloatware that I couldn't easily remove, plus Ubuntu 9.x runs like greased lightning on it. Now, if I had money to burn, my scientific curiosity would compel me to get a MacBook Pro to play around with.