Not sure about Icon cubes. I do know that every Rubiks brand 3x3x3 I ever owned makes that crunchy springy noise when it's turned.
I got what they call a 'Competition Standard Speed Cube
' from Puzl. That doesn't make those noises, despite being the same style as the Rubiks. Also, none of my eastsheens make that noise.
btw, cheers for the referral points. welcome on board [:)]
Please take off topic discussion off this forum. Thanks.