The Honda Odyssey is the roomiest minivan, but doesn't have the most stylish or most upscale interior.
The Toyota Sienna has the cushiest seats and the smoothest, quietest ride. But like the Honda its interior is pretty plasticky.
The Kia Sedona has less room inside that the others, but possibly still all the room you need. It looks and drives the sportiest of the bunch, and has the most upscale interior.
Chrysler has a fully redesigned minivan coming this summer. It's roomier than their current minivan, but not as roomy as the Sienna or Odyssey. It could drive the best of the bunch, and is more stylish than the typical minivan. As a first-year model, reliability is unknown.
You'll find my full reviews of the Honda, Toyota, and Kia, linked beneath their photos.
Have you driven any of the current minivans? If so, what did you think?