I'll start by saying this. Harems are harems - you should know what you're getting when you sit down to watch the genre. Having said that, Shuffle! is pretty much everything you want out of a harem without being too predictable.
The story is pretty good overall and the characters are great. A harem without good characters is really just the worst. This show is a little more fun/light and comedy-based but it gives me Clannad vibes a bit. It certainly doesn't match Clannad's awesomeness but it's a good show if you're looking for something similar (aside from the other Key VN stuff).