I need to buy a new car. Which one of the following should I buy?

I’ve narrowed it down to the following three: Honda Fit; Toyota Matrix; Scion xD.

We’ve got two 6 year-olds, and we already have a Eurovan for longer trips. Mainly need the car for commuting, and taking day trips with the kids. Currently leaning towards the Matrix or the Scion, either one with standard transmission.

Any advice, input, info would be appreciated. Please. Help me decide.