I have a single CR89 in my studio, will probably join the drop to get a second for stereo and harmony applications in the studio. I can't speak for the 30, as I don't have any, but the 89 is a superb piece of equipment. With a pop filter and some normal bass rolloff, you can get right up to the mic and it basically just warms up the sound - the proximity effect comes on smoothly and gently only very very close. Plus it looks beautiful on its included shock mount, and the case is solid - I would consider this a very serious mic, and worth it for studio work at twice the price. And no, I don't work for MXL, and have never got anything from them for free.