What are you using? I bet on overwhelming Lightroom majority, but still...
I really like Capture One's skin tones. One might argue as well that DXO is the best for landscapes.

I think you forgot Adobe Camera Raw in the options, no ?
Thats what we use...
We also use DXO for landscape CA.

Who is using Camera Raw with Photoshop can vote Lightroom - it's the same engine.

adobe camera raw -> photoshop for me

Diito leaf:   adobe camera raw,  photoshop

dittos, ACR, photoshop, i think you should include it  

At first (long time ago) I was using Canon's Raw Software. Later I was using Capture One. Currently Lightroom.

Same engine maybe, but I am not sure they both have the same options.
Anyways, I voted LR

I was using Capture One before and Adobe Camera Raw currently.

I started out with Canon's software, then migrated to Capture One. At some point DxO optics had me sold based on their lens-specific corrections and I used that for a while until I bought the 5D Mk II. Having paid extra to upgrade to the pro package (my 20D had run fine on the basic one), they took forever to support my L lenses (the 17-40 as one example) AND their handling of chromatic aberration was terrible.

Being fed up cleaning up CA in Photoshop that DxO couldn't handle led me to look again at Adobe Camera Raw (which at the beginning I had dismissed as Capture one did so much better a job) and for a while used ACR and Photoshop. Last year I decided I'd have another go at learning to like Lightroom and made the switch.

I answered Lightroom as that's what I currently use, but if someone else did something spectactular with image quality, I'd definitely switch again. It's getting harder now though as LR really does a good job, at least for the camera I'm currently using.

Hi,
I must add the following:
Lately, I have been trying to use JPEGS as much as possible. I have a Nikon D700 and the RAW converter inside the camera is very good. I still shoot in RAW-JPEG mode but I pick JPEGs over RAW more and more. 90% of my images lately are just tweaked JPEGs.

Kone

ACR > Photoshop (voted Other)

Aperture 3.0 on Mac, have used all the others at one time or another.