I visited Ectaco booth on CES and tested jetBook Color with several books.
It looks pretty good. I tried to buy one on the show but they didn't sell it and asked me do preorder on their website.
E ink also promoted jetBook Color. I like this short video below
I think Ectaco will sell a lot of these units because nobody sell eBook readers with Color E ink screen in US yet and many people like to have a new technology.