I just got the intec cooling station.
It takes both the usb ports of the Wii and although it has one extension you loose one usb port. I know that this can be fixed using another extension.
It's a little noisy.
It keeps the Wii cool... you can feel the difference. Specially if you have it in standby when the Wii's fan is off.
That's it. Just though you should know....