Why bother?
I have limited funds and an environmentalist to boot. Upgrading a keybed, amplifier, speaker, os, styles, voices to a new keybed, amplifier, speaker, os, styles, voices just to get 2 new voices is ludicrous. I have done this.
When it is all setup, and working, I can upgrade a voice by just upgrading a voice. Lower cost, less consumerism, no enviromental impact.
Starkeeper