I am a great fan of Zappa but have always steered away from the Mothers of Invention material due to, in my opinion, it being not entirely pleasing on the ear.
Now, Hot Rats is an absolutely brilliant album, with some of the best and earliest solo Zappa / ex-mothers tracks recorded so this is worth the purchase for this album alone.
Waka / Jawaka is not an album I would have purchased BUT is an excellent album in its own right, the closest some say Zappa ventured into Jazz, but not Jazz in any traditional sense, it has Franks mark on it. I was surprised by this musical tome and glad it has entered my world.
The verdict is still out on the grand wazoo.
Buy this mini box set as it is a bargain and is brilliant.