Originally Posted by Fat Least100Seraphs
How much of a difference is there between Darkness and Sky?
I don't mind the idea of picking it up if there's a good reason to play through it.
Not a whole lot. It's like the Crystal/Platinum/etc. version in that there's some tweaks and stuff but it's still the same (awesome) story, more or less. The additions are pretty convenient stuff though, and some cool stuff like new dungeons and some side story missions for NPCs, and then there's the cafe, where you can pretty much get IQ skills faster through drinks made from gummis, or the recycling thing which makes getting some items easier (A reviver seed for two escape orbs, of which you can get loads of from the dojo? Sold!) or just a better way to get rid of your junk items.
Overall it depends on how much you'd bother with a third version.