Larry, the IFP-799 has 1 gig of storage. I've heard on several lists that this is a big difference between the IFP-799 and the IFP-899, and that is just not so. I've been using this one for about four months now, and I can assure you, it has 1 gigabyte. The only differences I can see are cosmetic with one key exception. Having looked at Curt's Iriver at the convention, I can tell you that the levels are definitely higher on the IFP-799. They are so high they distort far more than the IFP-899. Hope that is helpful!