You knew they were coming, but today it's time to choose -- will you withstand the temptation of a tricked-out ThinkPad W520 workstation or T420s thin-and-light with Sandy Bridge CPUs? Yes, Lenovo's rolling out the red eraserheads this month for Intel's new chips as fast as it possibly can, with these latest two models hot on the heels of the ThinkPad T420 and T520 and ThinkPad Edge E420s. The $
