personally, I think refurbished one is good enough.
refurbished ones comes in as good as new condition.
if there is a problem with it, you'd most likely know within 90days.
it is unlikely that the product will break within one year that is no fault of your own. (if you break it accidently, 1yr warranty does not cover anyways)
and the difference is $70 which is quite a bit.
Thanks for the advice and suggestion! I heard somewhere that Canon places an even stricter QC check on the refurbished units than the brand new retail units. Something about testing each refurbished camera individually whereas with brand new units, they'll test a few out of a batch.