Canon PowerShot S400 / IXUS 400 Digital Camera

I have now owned a Canon Powershot S330, an S230 and the new S400 digital Elph. The S400 combines great features of the S330 with a 4 megapixel CCD. In my experience, I think the S400 (so far) is the best of the three. Though it doesn't have the 640x480 movie clip option that the S230 has, the movie quality on the 320x240 clips is very good and the 3 minute movie capability is nice. I believe the S400's movie mode does a better job in low light than either the S330 or the S230. I think the flash is a little stronger than on the S230. If anyone is trying to choose between the above models, I would say the S400 is definitely worth the extra money.