I am not all that happy with the M2.
Firstly, even with the blue ring inserted in the XLR socket all my xlr leads are loose when clicked in, o matter what brand.
I used this for the first time at a gig and the connection is that loose that when I adjusted the mic height it caused serious rattles and bad connections sounds in the PA at full volume. Any other mic I have from Audix,Shure, AKG and thomann's own t-bones dynamics never do this.
If you were doing sound for a show etc where various people are using the mic on a stand, it is very common for each to adjust the height and angle of the mic as they come on. In this regard I couldn't use the M2 as with loose connection it would produce too much rattles etc in the FOH pa. I do a lot of sound, have used hundreds of mics, stands , cables and never had this problem with any other mic.
I have an NT2000 which is great but it is one of the Australian made ones I think.
My main vocal mic for myself as a performer is the Audix OM7 and it is still the best live mic for 'gain before feedback' of the all but it very different from most and does require some EQing etc compared to an SM58 etc, but once dialed in, still the great and worth it.
I intend returning the M2 to Thomann. Perhaps I just for a bad one. Most reviews are good for the M2 but this is an honest review from and engineer and performer of over 20 years experience and I'm only stating my findings and as stated perhaps I just got a bad one.