I used the JM37 for a couple projects for a very short time. I would describe it as a bright mic. It worked very well on powerful singers, it just had a great presence about it. I loved it on my own voice, and started using it for all of my scratch tracks, over my KSM44, M-Audio Solaris, SP B1, AT 4040 and Blue 8-ball. I hated it on most female voices. My big complaint is that it's off axis rejection was horrible-- what I mean is that it picked up way more of the room than any of those other mics in a very non-flattering way, especially for a small commercial project studio that had the rooms pretty dialed in. I think it competes well in the $250 and under category, but I got it free with the Meek TwinQ, so I can't complain about that. Hope this helps.
Pete