Anyone care to offer first-hand advice about buying better-than-average vocal mics for live performance? I am a part-time audio engineer for a small church. We could use some new mics. I currently use the SM58 and the EV N/D767a. I have heard the beta 87a and talked to engineers who like it a lot. I have also used the akg c1000 for some quick vocal recording. Basically, I like the sound of condensers and I'm thinking seriously about getting some beta 87a's. We typically have a lead vocalist and 3-4 backup singers. We use wired ini-ear monitors so feed-back is not an issue, however, I like isolation. Music style ranges from pop/soft-rock to progressive/emo. Also, any recomendations about whether or not go wireless would be appreciated. Of course, budget is a significant issue. Thanks!