_crazy_man_ on 23 December 2013
Both are quite good.
You should play PoR first not only for the story and characters, but you can transfer your save so your characters get a boost to their stats (helpful in RD's hard mode).
Now on the differences:
PoR is a lot easier than RD tho. Only FE 12's Reverse Lunatic and Awakening's Lunatic+ are the only FE's harder than RD hard mode.
PoR's story is kinda generic for Fire Emblem, RD has a very good storyline tho.
PoR's support conversations are quite good, RD's are generic minus interactions between certain characters.
RD is a longer game than PoR.
Reforging system RD > PoR.
