Not to sound like a know it all, but...
I am a big fan of the Elric's. Full Metal Alchemist was released while the manga was still being written, so the animation team had to guestimate an ending.
FMA: Brotherhood was released towards the end of the manga and concluded the month after the manga was completed. So the second animation team had the full story of the Elric brothers.
I truly love the Brotherhood storyline compared to FMA, but I like a lot of the FMA first season animation showing Ed's prowess with alchemy (wasn't as flamboyant in Brotherhood) and the duel between Ed and Mustang...still cracks me up