There is usually a higher chance of finding the song your looking for on Spotify. Bands rarely put their songs that don't have a video yet on youtube. Then you have to rely on somebody else to upload a stolen version of it and hope the quality isn't bat.

I don't open youtube links to songs anymore. Chances are that the person who's sending you the link, the same one who won't bother to pay $11 to listen to music in good quality, isn't sending you a link to the official bands/labels channel, and the song is in bad quality. When you get a spotify link, you know you get good quality and the artist gets paid for your listen.