Well I'll throw in my 20 cents, trolling for Barra is the most boring method possible. They never seem to fight well on the troll. Maybe because when you hook them they're usually out from cover. Doesn't compare to casting lures at structure. When casting lure placement is more critical, the fishing itself is more visual (particularly in clearer waters) and it doesn't matter what line you're using, hook a 100cm barra 2 feet from a snag and only luck will land it for you.
Yes, a similar sized trevally will pull a lot harder for a lot longer. Indeed chasing GT's on surface lures is great fun and has developed a strong following but I wouldn't put them ahead of Barra, just different.