I import straight into aperture. Theres some settings for RAW like hue boost and sharpening which you can change as you see fit. The DPP software applies the picture profiles from your camera (like standard, portrait, neutral, faithful etc) whilst aperture doesn't do this, but you can do more in aperture anyway.
You can export straight to an external drive and also work from one of them if you want to. The export tool is really good as it'll convert a RAW file to pretty much whatever you want with really high quality.
DPP applies sharpening after you import based on the photography style you picked on the camera. This can easily be beaten with apertures edge sharpen or overall sharpen settings, which can be combined if needed. Photos don't usually need sharpening though imo!