Thank you all for reading my story and for your replies. Yes, emc2, I think there should be a more appropriate word. And yes, the M5 board guys call their M5's "Beasts". So this term is really quite tired and cliche'.

My RS6 is named "Blitzen", which means "to lighten or to flash". But it's hard to come up with a word that we could all use to replace 'Beast'. IMHO, it should be more elegant, sexy, powerful and sly. What fits that description other than "mistress"?