I have been a fan of Dell laptops for several years, the Lattitude D820 has won my vote again.

I love the machine and have had no real problems with it.  My next machine will have a smaller screen.  I don't like that many times the entire landscape is not used and the font size is too small.

I do enjoy the performance, can run multiple apps without noticing degrade in performance.

I have had to replace the battery, they are expensive and only have an estimated 1 year life.