I have three cases at the moment - the original Amazon case, the M-Edge Prodigy and the M-Edge Go! Jacket.
Using the Prodigy it is possible to fold the left half of the case behind and read it just like the Amazon case. The Prodigy is ever so slightly bulkier, but it doesn't make that much of a difference. It is more protective than the Amazon case because it has thicker padding and because it has the closure strap, which means it will stay shut in a bag or if you drop it (so long as it's closed) while the other cases might flop open, allowing your screen to get scratched or for the Kindle to land face-down.
Check out my comparison review of the Amazon Cover vs. M-Edge Prodigy
and the M-Edge Prodigy vs. the M-Edge Go! Jacket