The movie is just OK...since I knew from the beginning whats going to happen next as I have seen the original(including Memento and both Tamil n Telugu versions). I got to see that "This is no Memento". Common guys, just because the editing is not as good as in the original, you cant rule out that this movie is a remake of Memento. Everything 'borrowed' but still original.
Coming to performances, I feel Surya was better as the protoganist. Asin, not much difference at all. Jiah, never mind exploring that. There are only a few changes from the Tamil/Telugu version.
Overall - Just OK, nothing spectacular!