Pokerface

Lets say you're playing poker, and you have a choice to choose between two hand of cards.
1) You get two kings.
2) You get an ace and a king.

Which set would you hold on to, and which set would you discard?

1)Having two kings, there's a high possibility of getting another king, and even a pair.
That's a fullhouse!
And even if you do not get a full house, you would still have your high pair.

2)Holding on to a king and an ace is risky.
But there might be a chance of attaining royal flush! (Lets just assume they're from the same suit)
If not, there's still a chance of getting a straight, or a flush.

Full house eats a straight and a flush, but royal flush beats all.
And the odds are against you.

So, which would you hold on to, which would you discard?

I really don't know. I wanna fold. Haha.