This post caught my eye. Another thing to consider is EQ. Try making each VOC trak opposite (i.e. V1=+4@5 KHz and V2= -4 @5 KHz.). You might even want to keep one trak flat and EQ the other. Just try not to over do it.
Heck, EQ --and subtle comp--may bring out what you feel is lacking in your recorded vocs. NOTE: I have yet to meet anyone who actually likes their own recorded voice.