A good 2nd base option for the Rockies is Tad Igutchi. I think he might be an upgrade to Kaz.
When the Phils traded for himafter Utley got hurt and was out for a month, Guch hit close to .400 and was a great 2 hole hitter. He knows how to hit and always made contact.
The Phillies fans wanted him in the lineup when Utley got back and publicly begged to move Guch to 3rd to have his bat in there. From all indications, Guch didn't want to play 3rd though.
I think Guch will get a good bit of money though. I don't know if the Rox are in the market to sign above average FA though with all the players they have coming up for FA.