If you already have the T900, why are you interested in changing cameras? In the off chance the S95 is better? Anyway, I'm not sure myself, I havent used either. I'm just curious what prompted you to want to change cameras.

*edit - did a bit of looking into it, the S95 is pricey primarily due to its wide angle maximum aperture of f/2.0, which is really fast and capable of very low light. It also has manual exposure controls, which the T900 does not. If it were me, I'd pick the canon. But, why not just stick with the one you have?

But, the Sony is certainly a lot more stylish, those folded optics sony cam's are pretty slick looking.