You will be happiest with your mic decision if you compare a few, side-by-side. 90% of vocal tone in the mix is based on which microphone you use. If you hooked up 3 different mic's and recorded the vocalist, you might be surprised with which mic sounds better. KEEP IN MIND, the human voice is the most dynamic instrument to record, comparing one person to the other. Each and every person puts completely different dynamics/harmonics into a microphone, compared to any other person. Play with different mic's. You'll be glad you did. It may be that it was a 58 that sounded best. It could be the 57 that takes the cake in your mix. Have you looked at a Sure 7b? They have a bit of a soft/dark flavour to them. In regard to heavy growl or high end scream, this might sit in the mix really well!