I was looking at some pictures of the Sony Reader Daily Edition on Flickr and a light went off in my dim head.
This is very interesting (photos are not to scale):
5″ x 8-1/8″ x 19/32″ without cover
5″ x 8-1/8″ x 23/32″ with cover
4.72″ x 7.87″ x 0.57″
The Camangi is actually smaller! It weighs one more ounce, however.
The screens are quite different in resolution: 600×1024 vs. 800×600.
On the other hand, the Camangi is color.
Perhaps most devastating: they are both US$399.00.
Yes, the Camangi lacks free 3G, but still.
I said the Nook at 12 ounces was too heavy for extending holding. The Sony Reader Daily Edition is heavier!
Updating the prior list now:
Nook: 11.2 ounces (actually 12!)
Cybook Opus: 5.3 ounces
Archos 7: 23 ounces
Archos 5IT: 6.4 ounces (32GB Flash)
Pocket Edition: 7.6 ounces
Touch Edition: 10.1 ounces
Daily Edition: 12.75 ounces
Camangi: 13.75 ounces