Lick me - Mmm, don't mind if I do

...

But yeah, I think it's the better of the two. Good ol' fashioned summer pop, but it doesn't sound terribly recycled for once, so it gets bonus points there.
Ecstasy - I found it to be kinda boring... She's had too many songs like this recently, I think. Didn't really succeed in getting stuck in my head...
I hope
Running/Run! is something akin to Lady Go! or Run For Your Life ... what, we can have two hyper summer songs on one single, can't we?