I would agree with Andy 831, some material is available only on vinyl, some only CD, some both, so it's a matter of availability--brings to mind another point: I used to dabble in car audio also, but due to so many inherent challenges faced in the in-vehicle acoustics, and the so many tweaking options, I did get quite carried away, with whatever limited funds I have, tried all sorts of fancy setups (bi-amping, full active, phase compensation, time delay alignment, what not) but cannot achieve the sound I like, which is what I have at home, I've given up on car audio
I digress, my point being, sometimes in car audio, after much effort, what makes a system? I find that all too often, most cars I have sat in and listened to, end up sounding very clinical (no doubt with top-end transports, DAC, amplification etc), where is the joy in the music anymore? It seems to become a "technology for the sake of technology" race!

Sometimes people buy and listen to music that 'makes their system sing' high-def, DSD? but to what end?
imho, it all comes down to preference, granted not ALL your favourite music can be available in your desired format, but FWIW, I just want to relax to the music I love, never mind it being CDs, compressed digital audio, or even a CD-R
That said, with my limited funds and hence limited choices of vinyl, for now I stick with CD as my preferred source;
regards,
Kenny