It's a little hard to rate this tour, as I think some things were skipped because we (mistakenly) told our guide we had already seen certain things. Therefore, we didn't see Chan See Shu Yuen Temple and Merdaka Square.
Chinatown and Sri Maha Mariamman Temple are -amazing- things to see. We'd never seen a Hindu temple before, and Chinatowns are always interesting for the bargain shopping and delicious food.
Lake Symphony was nice to see the colored light-water show, and you have a good opportunity to see Petronas Towers up close. There's also a mini-park surrounding the fountains, which is full of people on the weekends.
River of Life was forgettable. There aren't actually many lights in the river, they don't change color, and we couldn't walk along the river, as it was roped off. You do get to see National Mosque in the distance, and a few buildings in the Skyline, but it's hardly worth it.
Our tour guide David was charming and friendly, and did everything that would be expected of a good tour guide. He even offered to take us to see food trucks after the tour was over, as we had extra time.
Overall, it's a good tour; but some sights are excellent while others are forgettable.