I have Air Norton, Tone Zone, Super 3, Invader SH8B, and now I have X2N.
I used to buy X2N but then returned it, it seemed to me that PCB is not as reliable as bronze (metal).
I record all sounds and X2N seemed the most interesting - it is a full sound. Yes, it is bright, but the brightness can be reduced with a filter. At first I thought D-Activator X, but there will be less bass, so I decided to buy X2N. I like sensors with coils with the same resistance, so my version has the same resistance, so less noise.
I have Super 3 in some.