Omnibus recommendations?

Basically, I'm looking for omnibusses to pick up. I've got my birthday coming up and my girlfriend is asking what omnibus to buy me, my buddy might get me one too, I'm wondering what people recommend...

So far, I have:

Invincible Omnibus Vol. 1, and 2 is on the way via amazon.

Both Astonishing X-Men books by Joss Whedon

Blackest Night, Brightest Day, Final Crisis, Infinite Crisis, but I'm looking for thicker omnibusses, around the size of the Invincible ones.

Ultimate Spider-Man Vol 1

JLA vol1 (this is big)

Daredevil Visionaries:Frank Miller

All Star Superman

Y the last man

Preacher(not sure these 2 are available as collected editions

New XMen by Grant Morrison

Sinestro Corps War (This is Johns' best ever book)

Crisis on Infinite Earths

No Man's Land Complete

The Complete Sandman

I recommend The Flash by Geoff Johns. Really really good, some of my favorite Flash stories are part of John's run.

You could get the Wolverine Omnibus by Mark Millar, The Uncanny X-Force Omnibus by Rick Remender, the Batman Omnibus by Grant Morrison. the Daredevil Omnibus by Bendis (best Daredevil stuff ever), the Captain America omnibus by Ed Brubaker, and the Iron Man omnibus by Matt Fraction. All are incredible stories.

@wolverine08: There's an omnibus for uncanny xforce???? I must get that! Wolverine by mark Millar also sounds awesome. Thanks a lot, those all sound wicked!

@hawkguy:

No prob. BRO. BRO. BRO. BRO. BRO.

Captain America omnibus 1,2,and 3. Has all fifty issues of Cap volume 5 by Brubaker as well as Reborn.