It's the sharpening that get's me! I use G'MIC's Gimp plugin, and prefer the "sharpen-deblur", which I use often enough to have saved my favorite settings. On my antique, it takes 5 minutes to do a full-sized image... and I'm never satisfied with the first... or second... or fifth attempt. The jpg only has a bad case of the "greenies," where the plants look almost like radioactive slime, and usually an EV value that's too high and washes out some highlights (such as the background behind the song sparrow, for instance).

On the plus side, CHDK now has version 1.2 in RC status, so I'm using that, and it does DNG almost as fast as the sensor-dump raw, and has the color balance and EXIF data to boot.