XBOX 360's are considerably cheaper, but just not too fond of the failure rate even with the new boards in them. The fucking about of sending it back, getting it repaired and all that, some members on here have had to go through it 2/3 times.
It's 6 of one, half a dozen of the other with the XBOX 360 and PS3 debate. If you have a light wallet and only want a gaming machine, XBOX 360 is probably the way to go. If you are feeling flush and fancy jumping into Blu Ray movies in the future, PS3 is a better option.
....and Scotty Slaphead, i sucky sucky you anytime pal :D