Thanks for the suggestion. I actually played with the WB on both of those in Aperture (I shoot everything RAW, so its all available). The grapefruit looks more natural with the WB adjusted and you could argue its better either way, but I sort of like it the way it is better even though its less natural looking - the spoon jumps out a little bit more with this less natural WB and I slightly prefer it this way.
The tart, when adjusted for the blown out white spot at the base of the wine glass, just looks flat and dead. It looks much more inviting as is. The grapefruit is arguable in terms of which works better. I don't think there's even a question on the tart though.
-Ray