I've searched the site a few times and it looks like there are a couple different top cases that people are using.
The Pelican / Storm 1450 and 2600 are pretty common but I think I'll stick with the Seahorse due to cost.
I've seen a few 540's and a few 720's and out of that I'd lean toward the 720.
However, They also offer a 630. It will be installed on an OEM (used) rack. I'd like to put a couple hooks on the lid so I can use a bungee net for my tent, and extra helmet, etc.
Has anyone had their hands on a 630?