[shassard]

The Atreus is a fun project to build and the fact that the controller source code is freely available is great fun. I've built mine with Matias keys and they do feel better than the wobbly and less smooth action found in the Cherry brown keys.

I have a few Advantage keyboards as well and in my mind they serve different purposes.

The Atreus is a great portable lapboard and works really well when you use it in that regard. FYI: The lack of extra keys lend this keyboard to Emacs programmers; You'll be chording on this keyboard significantly more than you might expect.

For a non-portable ergonomic keyboard, the size of the Advantage and extra keys offer a more comfortable typing experience when used on a desk. These keyboards are pretty damn huge though and will fill a backpack without any extra help.