Urs Heckmann's new Zebra synth is IMHO one of the very best things that ever came to the AudioUnit format. It could justify the switch to OSX by itself. Beautiful organic sound, very versatile, very easy to use and extremely well programmed (respects your CPU, even at shortest latencies and with big polyphony...) Rather than a long description, here's the beta download address for those who missed it : http://www.u-he.com/zebra/ Yann Le Bihan PS : Carefully check the readme rtf in order to get acces to the presets !