Which build is better?

[brooding_sliver]

4 Cloudcrest Lake
4 Tranquil Garden
5 Plains
7 Island
5 Forest
4 Winged Sliver
4 Muscle Sliver
3 Shifting Sliver
4 Plated Sliver
4 Victual Sliver
4 Crystalline Sliver
4 Metallic Sliver
4 Mana Leak
4 Pacifism

-------or------------------
4 Cloudcrest Lake
4 Tranquil Garden
5 Plains
7 Island
5 Forest
4 Winged Sliver
4 Muscle Sliver
3 Shifting Sliver
4 Plated Sliver
4 Victual Sliver
4 Crystalline Sliver
4 Metallic Sliver
4 Mana Leak
4 Miscalculation

 

[brooding_sliver]

4 Cloudcrest Lake
4 Tranquil Garden
5 Plains
5 Island
4 Forest
4 Winged Sliver
4 Muscle Sliver
3 Shifting Sliver
4 Plated Sliver
4 Victual Sliver
4 Crystalline Sliver
4 Metallic Sliver
4 Mana Leak
4 Miscalculation
3 Disenchant

 

[Reverend Love]

Dude why are you running Mana Leaks instead of counterspells?

 

[Oversoul]

The 1U mana cost...

It's quite budgety, but not bad at all. You can probably find some Swords to Plowshares though, which are much better than Pacifism...

 

[Ephraim]

I vote for the first decklist because it appears to have used more social studies than science.