Does Aperture 2 have a feature for resizing images by file size rather than pixel size? I seem to have a difficult time getting them right at the 150kb size limit. I can't seem to find this feature, really new to Aperture.
The only size control I know about is the quality slider and that's one of my frustrations as well. I have noticed that with 2.1 the file sizes have gotten smaller at the same slider level with the overall look is about the same so that's good.
I leave it on 5 usually and constrain the pixels to 800X800 or 1000X1000. Most of the time the file size is fine but occasionally one gets rejected by WW.