I like pestermite a lot, but currently I've had some success with the following version.

Mana: 21
9 Island
4 Chrome Mox
4 City of Traitors
4 Ancient Tomb

Creatuers: 19
4 Sea Drake
4 Looter ill-Kor
4 Serendib Efreet
4 Trinket Mage
3 Juggernaut (I might think of pestermite here)

Control: 10
4 Force of Will
4 Chalice of the Void
1 Pithing Needle
1 Tormod's Crypt

Utility: 10
4 SoFI
3 Jitte
3 Thirst for Knowledge

I don't know if I want to remove juggs because if I do then I'm only running 8 threats and I think with the faster decks become the faster FS has to become and it must adapt.