Stay and Diamonds are memorable I don't know until when but there are; Drunk In Love is a timeless urban classic in the making. once Pretty Hurts explode it's turning into a Firework/Unpretty-size anthem. so for now yes UNAPOLOGETIC wins; but saying by FAR is a little reaching.
+ don't forget internet fad "***Flawless" is upon us. all this put together and promoted a bit more will result in Beyoncé most memorable era after I Am Sasha Fierce.
Memorable singles? UNA. Memorable songs? Self-Titled. Una had the far more successful singles so the singles will be more remembered. But, Self-Titled has these lyrics that are almost punchlines ("Yoncé all on his mouth like liqa" "I woke up like dis") that make them really memorable.