I would click all of the above.
Maybe a lack of monitors at the moment. Before Christmas I was deciding whether to get monitors or a pair of condensers for my overheads.. I got the mics because I thought even if I could hear the problems better with monitors, I wouldn't be able to make the mixes better due to the lack of quality gear. Now I'm kindof saving for monitors but I know there's more I need. I can't seem to get a vocal take I'm really happy with - preamps, mics, room treatment, quiet computer (seriously it's like a vacuum cleaner!), dedicated recording space...... Someday it will be mine.