Diki, one of the reasons we have always gotten along is that we have always been able to amicably agree to disagree . Marco Parisi may be my favorite SYNTH player and their are times I have been absolutely mesmerized by his artistry and mastery of the instrument. HOWEVER.....in this case, I hold to my argument. The tone is 'okay' (not great) but the playing technique doesn't sound like a sax player to me. Besides, this is not a traditional keyboard instrument and even a great keyboardist would need to learn to play it properly to get all the expressiveness it's capable of (you may notice that it never really took off commercially).

The most authentic is probably those digital sax's but then you'd have to know or learn sax fingering, and at that point you might as well just go ahead and play the sax . Next best; probably a Yammy with a breath controller. JMO.

chas