Portable A/C Recommendations?

tyen asks: "There is enough gear in my office that a dedicated air conditioner is called for. A standard window unit will not work for various reasons; I need a unit that will let me mount an intake/exhaust panel inline with the window. I am looking for recommendations of portable units as used in data centers for spot cooling; reliable, low-maintenance units preferred over simply cheap ones. While the DeLonghi Pinguino wins style points for its unintended Linux riff, US$1,000 and up is a bit much to spend just for the sake of staying 'tres Linux cool'."