Well I did a lot of research before buying my Bear Claws, and for the little I've gotten to use them I am very happy with them. With that said I cannot imagine you finding a better tire for yourself than the 589's you seem to be happy with already. I've only heard great things about the 589's and if I wasn't also considering money when I made my purchase I probably would have bought them myself. For my 2 cents, get another set of 589's for the new bike and you wont be disappointed.
Good luck with everything
Ron
Good luck with everything
Ron