Dell sits at No. 4 on the best-selling desktop brand list with a 7.4 dollar share percentage. The Vostro 270 (pictured), a smaller-form and budget-friendly desktop, was Dell's leading desktop seller in the month of March. Dell's Inspiron 660 line is advertised as Dell's "Everyday Desktop" while the XPS 8700 is geared toward entertainment and gaming. Overall, Dell's dollar share increased .9 percent over the course of the year.