I'd like to use fluid more but unfortunately for us I don't think it would ever work because my boss is too anal over appearance. It's hard not use absolute heights and widths with the designs he comes up with. I think 1140 to 960 fluid would be great thing to try though. Still gotta optimize for 960px so you look good on tablets and other smaller screens. I think trying to be fluid below 960px is just stupid. Right now mobile sites need to be fast and efficient and you can't speed things up enough by just changing your CSS, the underlying HTML must also be compact.