Backup Tape Autoloader

Hi, I was wondering what are a few good options for two tape or multiple tape autoloaders. We currently use 4mm DDS tapes, and we want to stick with an autoloader that we can use these tapes. Is there anything is is recommended that would be in the under $1,000 price range. We are only looking to backup around 100 to maybe 200 GB as we are only a small business. I have looked a little at the Sony TSL-11000 DDS4 Autoloader and the IBM 7332-220 but I am not exactly sure what I should be looking for. If you can help me out..that would be great. Thanks