These sites may assist you in making a decision, the more I read and from my own personal experience, the more I realise that a good quality daycare centre with good quality and commited staff will be hugely rewarding for your child.
http://www.planetpapers.com/Assets/3408.php http://www.drspock.com/article/0,1510,5586,00.html http://www.drspock.com/article/0,1510,4394,00.html http://www.linkup-parents.com/artseparation.htm
There are many more sites that may help you decide but the theme seems to be the same, choose a daycare with good ratios and good dedicated teachers and the rewards will be worthwhile.