I like the work flow and operation of ACR, e.g. the "recovery" and "fill" sliders. I like the resolution I get. And the detail I can drag out of shadows.
But I like the automatic correction of lens distortions (especially with my 20-35 f3.5) in DPP. In all other areas, DPP is seriously deficient for my 5D images. I can handle the clunky operation. I'd appreciate some suggestions about the getting the best out of DPP, especially in terms of shadow detail and resolution.