I just love my Generations, I do prefer the sound of the blue top silver body ones to the red / brass variety.to get the top off you need to use REALLY hot but NOT BOILING water........
Susato's have a lovely tone.. but the small D whistles are unreliable (as has been mentioned) on the top register...... although the low Susatos, ( I have a D, F & A)...all play wonderfully........
slainte
alison