I currently own a Samsung Galaxy S4. I'm thinking of bumping it up for a LG G2 32 GB D802 International Edition or a Google Nexus 5 32 GB. Which one do you think I should get? Please tell me about the G2's camera too. I went into one store to try it and it was working flawlessly but in another store, camera app was lagging so much that I couldn't even take a decent picture. Please confirm if there's an issue with the camera.