The only Larry Niven I've read so far is "Footfall." Don't be put off by the cover, it's an awesome ride! The local used bookstore sells nearly new hardbacks for about the same as a new paperback and I've been keeping my eye open for more of Niven's work. So far, no joy. I may have to put some on hold at the library. They're hardly ever in.
I thought "Song of Susannah" was better than "Wolves of the Calla" but still not up to par with "The Drawing of the Three" or "The Wastelands." Still a very good read. Part seven is due out later this year and I'm dying for it!