Hi Alex
They cater to very different needs. Its like asking if you like Sedan or an MPV.
The x100 is an excellent PnS camera with more controls than the Sony Nex series with a cool look.
The K5 is a semi-professional camera with many adjustments to cater to varying creative needs.
If I were you, I would get both as long as you can break free of the N-hold and return to Pentax..haha