Before anyone else points it out:
"i prefer a PS3 for the very reason that it is a media centre" - 360 can do everything the PS3 can in this respect.
"i can download stuff on my laptop, put it on my memorystick and play it straight on my ps3" - Same, in fact the Xbox360 supports more video codecs.
"i just charge up the controller by plugging it in" - Same, but you have to buy the cable of course.
And before you ask, yes I have both consoles.