Although I appreciate both instrumental and vocal virtuosity, those attributes are independent regarding which songs or performances I enjoy.
As previously stated, a good song is a good song.
I have recordings by musicians that, while technically proficient, once I get past the "Wow! How'd he do that?" (Or "I wish I could do that
) I find that there's not much worth listening to.
In my college days I heard a cautionary tale about composing/performing "music for musicians." That does not mean dumbing the music down, but rather serving the needs of the music and not adding difficulty and virtuosity merely to impress one's colleagues.
Sometimes a song works best with only three strummed chords.
Of course it's always nice if the singer can carry a tune and plays the right three chords.