Warlord Wargear (Red)

The best red wargear overall is:

Adrenaline Stims (2% is good, 3% is best)

All around good for all heroes and purposes

Heretical texts (18% or higher is good, 23% or higher is best)

Most valuable on heroes with high damage (e.g. Asketill)

Cameleoline (15s or higher is good, 18s or higher is best)

Most valuable for high-dps heroes for solo or defense purposes

Doubled Ceramite (32% or higher is good, 38% or higher is best)

Most valuable for high health heroes (e.g. Mortarion the Reaper)

Most other red wargear is not worth it, though some other wargear is valuable in specific circumstances. If you are using the hero for skirmish and your strategy is to outrun your opponent, jet pack may be valuable to give your hero extra speed. If your hero is mostly being used to provide anti-air capabilities (e.g. when using bikes), consider a good skyfire nexus. Silvian the Swift specializes in killing heroes so he benefits greatly from Auspex Sight.