Board Thread:The Flash discussions/@comment-28354683-20160501172546/@comment-26397914-20160507005718

LOL, this is all awesome speculation. Feel free to edit the list below. Just off the top of my head, we have the following Known various major speed references on the show (no comic references - I.e. no Professor Zoom yet mentioned):

Barry Allen (aka Flash):  Barry S1 < Barry S1 post "Power Outage" <= Barry S2 < Barry S2 "Versus Zoom" <= Future Barry pre-Nora's murder

Eobard Thawne (aka Reverse Flash, E1 Harrison Wells): Eobard S2 "The Reverse-Flash Returns" < Eobard S1 <= Future Eobard pre-Nora's murder

Hunter Zoloman (aka Zoom, E2 Jay Garrick): Hunter S2 Time remnant/Origin < Hunter S2 <= Hunter S2 post-"Versus Zoom" Not sure if Hunter S2 origin "Versus Zoom" belongs in the list somewhere.

Presume that all of the above can travel through time, and have some connection to the speed force. Exclude Barry's derp to Supergirl's earth at this point, since it was ommitted from CW's side of the crossover. So none have yet "accidentally" crossed into additional universes. Again, no reference (to my recollection) of the "negative speed force" yet in the TV universe. Lightning color has only been estimated to change with use of V6/V9. However Hunter/Jay remained yellow when injecting V6/V7/V9, leading to the belief that he controlled his speed somehow during those instances, as well as when he was being tested by Caitlin during his introduction to the team.

We know that Barry S2 "Versus Zoom" >= Hunter S2,  and Barry S2 >= Eobard S2 "The Reverse-Flash Returns", and Future Barry pre-Nora's murder >= Future Eobard pre-Nora's murder. Barry captures Hunter with the help of tachyon device, and captures Eobard in Season 1 with help from Arrow and Firestorm. There is no direct comparison yet to Hunter S2 post-"Versus Zoom".

My best guess would be that Barry S2 "The Runaway Dinosaur" <= Eobard pre-Nora's murder < Hunter S2 post-"Versus Zoom". For all intents, Trajectory may be the fastest speedster we've seen yet. I do agree that Eobard's intellectual intelligence makes him far more dangerous than Hunter and just as violent, but that wasn't the question. Will just have to wait and see who is elected "fastest."