As for me I've given up for now. I went ahead and bought a Sony PRS-600. My brother had one and it handled the PDFs I wanted to read just fine and it's able to read epub.
The PDF's I want to read are for Microshaft's certification books.
(No I don't like Microsoft, but they put money in my pockets.) And it reflowed the text just fine.
I didn't know some PDFs could be reflowed. I learned something new.
I'm sure the Irex will probably be able to do the same thing since they are using ADE.
I still want the DR800, but I will now wait for others to review it and maybe I'll buy one for my birthday in May. I still think the 8" screen is the idea size and I like their form factor. As long as the annotation works with that pen, they'll still probably get a purchase out of me, it will just be later rather than sooner.
Etienne66