Dear @mijostyn @jcarr : Jonathan, you already know that for many years I really have a big respect for you, your products and your knowledge levels.
Now, what you said on Allaerts is true with the MC2 Finish Gold but not with the F!. The " problem " with the F1 first than all is its very low output but it's extremely sensitive to impedance and VTF set up. It's not a plug and play cartridge as could be Lyra or Ortofon.
Even that Allaerts does not recomended i tested for the first time my MC2 FG in nude fashion and against what the designer recomend I listened a different kind of sound for the better, same with my F!.
I have not the opportunity to listen the Lambda version of the Atlas but only the Etna.
I think that when we are talking of these very high quality whole performance levels in reality could be no true differences ( this is better than the other ) in between but first which cartridge mates the better with our each one MUSIC/sound targets and second the each one room/system levels.
As I said, I almost own all the Lyra models and the Ortofon too and still I give a confidence vote for the lower out put Colibri samples.
Now, no one cartridge is perfect.
mijo, you need to experience the Allaerts F1.
R.