Board Thread:Skyrim/@comment-110.168.240.168-20140424104245/@comment-26357188-20150603043118

It all depends on if you want either Dragon slaying perks or slightly upgraded shouts.

Personally, I usually join the blades because of their role in Oblivion, and they just generally seem better than some old hermits living on a mountain.

But lore-wise the Blades are the obvious choice. Sure, they want to exterminate the Dragon's (mostly because of their Akaviri origins), but they are helping the common people of Skyrim by doing so. The Akaviri rid their land of Dragons because they plagued the land, which is the same case in Skyrim.

In fact, the whole main quest is about preserving the current Kalpa, which the Blades help in doing by fighting both the Thalmor and Dragons, while the Greybeards do not approve of preserving the current Kalpa.