I built my own desk last year because of the expense of a new desk and the fact that all the desks I looked at weren't quite the right size for what I wanted.

I've been using it every day for over a year and the desk has withstood a barrage of abuse much better then previous desks I've owned. If you have the space to build one, I highly recommend building one to match your exact specifications.

Here a blog post about how I built it: http://nolanbrown.com/howto/2012/12/19/desk-build/