Lenovo W520 vs MBP 15" 2011

I am in the market for somewhat of a budget laptop with quad-core capabilities. I do a heavy amount of work in windows as an admin at a windows shop, but tend to do development/minor graphics work as well (Visual Studio based, but also python and web stacks, Photoshop). Having access to bash via OSX is an awesome feature - and I also want to get more familiar with OSX as it has been years since owning a mac.

Also, I've heard a lot of good things about bootcamp and parallels, etc., but I am...

Lenovo W520 vs MBP 15" 2011

Lenovo W520 vs MBP 15" 2011