I'm a little confused to see Chain of Vapor missing from the lists I see.  I've been playing U/r Landstill for several months, and in my experience Chain of Vapor is the best removal the deck packs. Here is my List(missing Lotus, UMox, TWalk, and LoA because I don't own them):

Card Drawing
1 Ancestral Recall
4 Standstill
1 Fact or Fiction

Counters
4 Mana Drain
4 Force of Will
3 Misdirection
3 Stifle

Removal
4 Chain of Vapor
4 Lightning Bolt
4 Fire/Ice
3 Nevinyrral's Disk

Mana
1 Lotus Petal
4 Faerie Conclave
4 Mishra's Factory
4 Volcanic Island
4 Wasteland
1 Strip Mine
2 Petrified Field
2 Polluted Delta
3 Island

Has anyone done extensive testing both with and without chains? I would like to hear the results.