In the dry, both are fine. In the wet, there's better bite and better modulation on discs.
After a long descent, I kind of prefer rim brakes due to them being much quieter - rotors tend to "swish" the pads a bit if they've been heated up. Nothing permanent, but noticeable.
With any mechanical setup, having fresh, low friction cables help with feel, modulation, and power. Just got new cables on my rim brake bike (after never touching them), and braking was like night and day. Not much of an issue with hydraulics, though hydraulics will likely have to be bled at some point (haven't gotten there yet with the disc bike).