Newer Technology today announced additions to its “miniStack” hard drives. In addition to the initial 80GB, 160GB, 250GB and 400GB models, customers now have a new 320GB model for US$289.99 and 500GB model for $499.99 to choose from. These new models feature high-performance 7200RPM hard disk mechanisms with a large 8MB data buffer. Customers can purchase the enclosure only for $99.95 or full solutions with 80GB to 500GB of hard disk space starting at $139.99.