I'm in the camp of, it's better to have a good mic to start with.

I too, wonder how many folks will think that spending $70 on a plug in while using a cheap dynamic mic will suddenly have their vocals sound like they were recorded on a $3000 Neumann.

Using this to get new flavors with an existing mic that is already pretty decent, is what it's probably very good at doing. But I also wonder if that wouldn't be possible with the artful and tasty use of EQ from a plug in you already likely have. For example, if you want the vocal to be warmer.... boost the mids a bit..... want it cooler, cut the mids and lows and boost the highs to taste.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.