Drake (cst776) vs Drake II (cst454)

[jawhite04]

Sorry if this has already been answered, but I am looking for accurate information on the difference between the Drake cst776cefg and the Drake II cst454cefg. One Toto rep told me the only difference was the shape of the tank. The other told me that the bowl on the 776 was a different design.

I have two of the 454 and have been happy with it, but given the price difference between the two, if the 776 has the same features I would rather save some money on the next replacement. Thanks in advance.