When a website has a big makeover are you the first to jump in and use it or do you like to stick with the old design?

Websites such as Yahoo!, MSN, and CNN have recently been experimenting with extreme design changes. A lot of the time there is a preview page for the new design that users can choose whether or not to begin using it. Are you one to begin playing with the new design right away or do you like to stick with the old design unless you have to switch?

I love to play around with the new design, it’s exciting for me, yet my wife gets used to the original and won’t switch over until she has to.

A couple examples:
– Yahoo! Old | New
– MSN Old | New
– CNN: have to use New

Do you know of other sites that are testing out new design? Which do you like better, the old or new?