I've tried them all. C1. Bibble. LR. Aperture. Heck, even Phocus. In the end, I stick with the simplest solution... Adobe Photoshop/Bridge and ACR. I don't batch anything and instead tweak each photo individually. Time consuming surely, but I'm not a high volume shooter. I also prefer "direct file management" instead of these "library driven" ones like Aperture and Lightroom. Maybe I'm just old-fashioned, but it works for me. 😛
Leica used to recommend C1, now they're into LR. There were advantages in some cases (anti-moiré and sharpness, etc.) but since LR uses the underlying ACR I'm not "missing anything" so to say by going with Photoshop instead.