AKG C 555 L

I'm using this mic for acted-singed show , and actors can't stand in front of microphone stand, or hold microphone in their hands. If that was not a case, I would instantly use another mic like sm58 or e835 as those sound better.

Low end response is exceptionaly good and extended providing "larger than life" sound quality, but you have to watch out for distance from mouth, and you can't have control over that with actors running all over the stage. If mic is to close to mouth, nasty low-mid artefacts come into play, and you have to have hands on eq all the time.
Being a condenser mic hi-end is good, and regardles of that, you can cranck it faily loud before feedback even comes to play or becomes an issue.

We tried clip-on flute mics in a similar price-range and were unsatisfied about how much noise from the flute's key-strokes was transmitted via the clip and the mic's neck. In an almost desperate attempt we tried this neck-band mic to avoid that type of sound transmission and were positively surprised. Proved itself during its first live-performance of our amateur band (comparable to a small big-band).

Depending on your head-size and ear-positions, the microphone's neck might be a bit short to be used as a flute-mic, though. Can't really blame this though, as it is not advertised as such.

The only negative surprise was that it does not ship with a mini-XLR to XLR phantomadaptor by default.