Cards and their Values

I know there are a ton of posts on cards, but I am just curious. Is the speeds for the higher cost cards worth the additional investment? These are the two cards I am looking at: I am just not sure an additional $26.01 x 6 = $156.06 is worth it.

Does someone recommend a different card, brand?

MSI 8GB Armor cards cost $209.99
Core 1291 MHz
MEM 8000 MHz

The MSI 8GB Gaming cards cost $236.00
Core 1316 (OC mode)
MEM 8100 MHz