As much as I enjoy vinyl, I would have to go with CD's.
For me, the sound quality is on par, or better, than vinyl. And I own fairly high end vinyl and digital playback systems.
But my main reason may be, I am in the constant search and discovery of new: music, bands, composers, musicians, etc, and the vast majority of what I listen to* is only released on CD.
So, since the discovery of new music is more important to me, than any specific format, CD is my format of choice.
*Prog, jazz, contemporary classical.