Period or Shunkan Sentimental?

I am not sure on where I should place this thread but I think it is somehow related to anime so I posted it here. Well anyway, if you were a given a chance to choose between the two, which do you think should be the better 4th Opening Theme Song for Fullmetal Alchemist Brotherhood?





As for me, I would say Shunkan Sentimental should be the 4th Opening Theme Song for Fullmetal Alchemist Brotherhood because it is more upbeat than Period. What's your opinion about this?

Chemistry and OP songs doesn't work well.

They're OP song for the 4th OP for GSD, also failed. They're songs isn't OP material I guess. I like Wings of Words, but as an OP it doesn't match.

just as Kaimax said. Period isn't suited for the OP. so, i'll pick Shunkan Sentimental. at first, when i still haven't watched the anime yet, i think that Shunkan Sentimental is an OP. lol

and, the Shunkan Sentimental's visualization in 00.47 to 00.58 is suited as OP, i think.

Well, i don't really like many of Chemistry's songs to begin with so i'll go with the other band.

Shunkan Sentimental because it's awesome.

Shunkan Sentimental.
It was my favorite since Again by Yui, the first OP.