Alright so im thinking about buying the 2010 reprints of the Halo books but i cant decide because im not sure if its worth it or not. Does anyone know what they actually changed (other than the cover art) from the originals to make me justify spending the money?
It’s just better ink and quality, honestly I enjoy having worn-out books. It gives a ‘vintage’ feel to 'em 
I don’t believe any of the actual text was changed or fixed, but there’s some new adjunct material included. If you just want a better print, go for it,
Some of the text was changed to fit better in line with established canon (such as meeting the Brutes at Harvest instead of in First Strike, or knowing about the Elites since the war started). It’s subtle, but I feel like it’s nice. Except the 2010 reprint of Fall of Reach that I have has a misprint on the dates in the last half, saying the year is 2542 instead of 2552. >.>
I think they fixed that with subsequent reprints, though. It just has subtle changes and adjucnts, as well as nicer quality ink and paper (and it’s easier to read than the originals), so if you want 'em, go for it.