I'd drop the whole "but eets fer mah blaahg, maw" crap and tell them you have the money for a 360, and you would like to have one.
i've been saying that ever since i found out i could hook up an Xbox 360 to my PC and debug games on it! one of the major things that stands in my way of game programming AND reviews is the lack of a PS3, Xbox 360, and R4 type thing.....