Julio, my favorite Rutman CD is probably his collaboration with Carsten Tiedemann of Mo Boma under the project name "Spacebow," called Big Waves. His Steel Cello Ensemble's Zuuhh!! Muttie Mum!! CD isn't bad, either. I first heard him on an LP called "Bitter Suites," which I don't think has been reissued on CD.
Hdbrell, forgot all about Harry Bertoia. He is probably better known for his Bertoia chairs, but I love his music, too. I have his "Unfolding" and "Sounds" CDs, which are reissues of earlier LPs. Who needs a great synth if you have a great acoustic sound source? The Bertoia pieces remind me a bit of albums using the wind harp, but are much more complex and almost orchestral. I've corresponded with his son Val, who seems like a nice guy.