For those whom believe in cable upgrades...
What order do you upgrade the cables, from making the largest difference in sound quality to the smallest? Notice I say "largest difference" instead of "largest improvement," since we all have different preferences, but "more bass" or "less dynamics" are a bit more subjective.
Personally, I've found the biggest impact come from headphone recabling, but they're also the most expensive cables I've tried. The least difference came with power cables, though I've only tried the (relatively) inexpensive Signal Audio power cables.
From my experience:
(largest difference) headphone cable > interconnect > digital cable (coax/toslink) > power cable (smallest impact)
I would upgrade in this order when looking for changes. What about you guys?