Here is my top 5:

5) Sakura Vandal (and Classic)

4) Elderflame Operator

3) Prime Vandal

2) Reaver Sheriff (and Vandal and Operator, honestly the whole bundle is sick)

1) Oni Phantom (and all the variations , all of them are beautiful)

Honorable Mentions: Surge,Polyfox and Red Alert Collection from the B.Passes, Soverign Ghost, Glitchpop Dagger and Odin, Wasteland Sheriff and Vandal, and Ion Phantom.