Mild derail: if you want an ebook reader, pick a Pocketbook Lux, and use Calibre (with the appropriate plugins) to strip DRM from your various ebooks and read them there. The advantage with that kind of setup is that basically you can read every ebook from every platform.
Except Orbit. Half of the Orbit books fail conversion from AZW, you need to completely strip formatting which dumps an ebook with no chapter splits on your reader. So I still buy Orbit in paper, the rest... on my Pocketbook.
End of derail. You may now resume discussing what exactly Roundup means.