You are right about turning a song off that has sound issues, even a good song. I listened to Hazel, and I noticed a few glitches in the sound, but it didn't distract me from listening to the song. I do like the fuzz on the guitar tone, but I think it's something that people will either like or find grating... which isn't bad necessarily, it just might alienate some people from otherwise liking the song. What mic did you use to record the vocals? Seems to me that the level in the mix is about right, but they sound kinda in a well compared to the rest of the track. Not bad, but enough for me to notice. I like the song.