User blog comment:Fistful of Force/Avarice seals aren't worth it./@comment-203.59.230.166-20120822070909

In the grand scheme of things it all comes down to playstyle and what support you are playing.

The non-aggresive class of supports do not require more armour than those marks and the stacking of gp5 seals with quints and the mastery allows you to get your gp5 items faster, which in turn increases your gold income earlier, allowing you to ward harder or get your auras faster.