Have both, absolutely love both. I think KR is more fun to play but FR2 is a better, more polished package. If I had to have only one, I'd probably pick FR2. The over-the-top difficulty and the grater sense of freedom the gameplay offers sells me. But it's crazy close. I have both on my phone right now, and I'm in a minimalist phase...only have 12 or so games at any time.
