Those instruments seem awesome. Other High end options are:
http://www.barryguy.com/travelbass/t...s02/index.html
and:
http://allbasse.com/accueil.htm
Both of these are carved instruments. My Problem with the Czech-ease
Is that it is expensive and it is plywood. It was a little "Close but no cigar" for me. I prefer more Eubish qualities than plywood.
I ended up with the ergo for the price and quality.
The fact that is different keeps it from gathering dust until I travel where the Gage bass I'd only want to play if I had to.