Guys that know the ins and outs of ITA, expertflyer, etc. and know how to manipulate the programs to find routings I would not have dreamed of. Tclin and wanaflyforless come to mind.
Yes,
Tclinand
wanaflyforless surely qualify as such. But does
Tclin do the actual MRing, or is he just kind enough to share ideas with the rest of us? (I know that
wanaflyforless does in fact do those
grueling BIS itineraries.