Re the two organ sounds - it's not really surprising that they sound very similar, since they use the same basic sound sample
![](http://www.synthzone.com/ubbs/smile.gif)
However, if you look at the composition of the two sounds, in the Sound Editor, you will see that besides the dominant sound (Slow Rotor 1), the Key Click Organ has 3 additional components (16', Organ Click and Fast Rotor 2) at lower volume settings. So there is a subtle difference in the two sounds.