Defender Titan here. I do alternate between Striker and Defender at times, but Defender is my main play style. So the Helm is fairly useless to me statwise. The defense is nice, and the light would be able to put me over the edge to level 26, but that's about it. My only gripe with Gjallarhorn is that I already have Invective, the exotic shotgun, so it would be constant switching between the two. I can only afford one, so fellow Titans, please advise.