The Glasshouse isn't anything special for solo play. The Saint-14 will serve a lone defender better. It is useful in a fireteam, as the benefits offered from the ward (BoL & WoL) last longer for every guardian who receives them, multiplying the fireteam's damage output or survivability. However, where the helmet REALLY shines brightest is in raids. With six guardians receiving five additional seconds of Weapons of Light, the team can shovel out incredible damage against a boss. With all six guardians, that is a cumulative thirty extra seconds of a 33% damage boost to all weapons (with Illuminated) - basically the equivalent of having eight people shooting at him instead of six. For 30 [i]more[/i] seconds than normally possible! I have the Glasshouse, and I assure you, it is the very best Defender exotic for raids, nightfalls, and other endgame content where coordination and teamwork are necessary.