Sandisk released this about two weeks ago, looks like its going to be both the fastest and ( depending on how much you can get it for locally ) the best value flash drive out there. The drive scored highest in the 4K random write tests where it outperformed the second best drive by a factor of 10!
CrystalDiskMark score
Atto score
the full review is here
CrystalDiskMark score
Atto score
the full review is here