[quote name='cagfansub']Gosh, FullMetal Alchemist Brotherhood releases are very confusing..
I got the part 1,2,3,4 and 5 last year and now, we got Collection 1 and 2.
What's the difference these two??[/QUOTE]
More episodes on fewer discs.
EDIT: Sorry, that is the Blu-ray versions. I think the Collections are still 5 discs each.