I am really starting to get into Frank Zappa and I only have a few of his songs. What I need to know is what do you think his best album is?

I ask this because he has released so many. So for you Zappa fans, give me your opinion on what you think is good.

Here are some of them just for a list:
Apostrophe (')
Strictly Commercial: The Best of Frank Zappa (greatest hits aren't always the best)
Hot Rats
Joe's Garage: Acts I, II, and III
We're Only In It for the Money
Over-Nite Sensation
Shut Up 'N Play yer Guitar
Freak Out!
Sheik Yerbouti
The Gran Wazoo
One Size Fits All
top axes:
Taylor GS8
Fender American Strat (w/DiMarzio pickups)
Epiphone Les Paul
Probably better taking this thread to the Classic Rock forum.
Lets All Goto Mars: The I The FLAMING LIPS Club
I bought Cheap Thrills recently and its pretty good.
Stock Gibson Pickups from a 2005 V, I think they're a 498T and 500T set FS/FT
Duncan Distortion (regular spaced) FS

Looking for: an acoustic, recording gear, or $