I don't think I would buy either of them right now. (Though I already have an iLiad.) I would wait to see how the power management problems work out before buying the DS1000. iRex promised to fix the power management with the iLiad and then had to admit they couldn't. I don't think they can be trusted with this on the DS1000, either. If the power management was important to me, I'd wait for them to fix it before buying.
I'm not too happy with their abandonment of new features on the iLiad, either, after promising a new multi-format viewer all year. The features of the DS1000 look pretty nice, but I just don't have confidence in iRex as a company able to react to consumer needs.
