SystemLogic has done a review of the Iwill Side Raid ATA66 Controller Card. A promising alternative to the Promise FastTrack 66, although not as good, it does do the job. They benchmark comparisons between the two to prove which is better as well as take an in-depth look at the actual controller card.
FULL STORY @ SYSTEM LOGIC (http://www.systemlogic.net/reviews/hardware/controllers/iwill/sideraid66/)