Going for brachy said...
I have chosen to undergo cyberknife because it offers chance of cure, no matter how small.
I hear you, there, brother. I can't imagine how it feels to think it was "only" G3+3, then to find out that it has a nasty streak. I think I'd opt for CK, too, just for that chance. . .
I'll be watching your progress. BTW, which CK center are you using?