Completely by accident I started with season 3. It was really nice, with very composed, nice, funny (Taku was great, but not only him) people. Kind of surreal that all of them, before or after taking a tough decision, discussed with all those involved. I am not sure this is the case in real life. They like it or not, you're by yourself, so you have to do indeed what is the best for you, but it's not fair to hurt people in the process. You have to be open, and I really liked it. Very articulate contestants in season 3. I gave a full 10. Unfortunately, after that I got to season 1. I totally understand that, at the very beginning, they didn't know what happens, so they were careless (like in real life, where you gossip about X with Y and splash dirt about him/her and the next day you do the same with Y about X). However I finished it, and also season 2, and I must confess that I liked it.
Of course it's edited, but you cannot edit emotions, and there were real emotions flying over every episode. I was just curious about Love Island UK, and I must confess that, after 3 episodes of season 1, I like the Australia one way more.