Drum of Endurance is just an expensive ineffective aquila. Its worth it for the active buff and it synergizes with manta carriers (except AM) but its unproductive for stats. You basically get more stats with a Ring of Aquila + Wraithband.
Drum of Endurance: 1655g
Int: 3 = 36 mana and 0.12 mana regen
Str: 6 = 120 hp and 0.18 hp regen
Agi: 6 = 6 dmg, 0.86 armor and 6 att. speed
Dmg: 3 + 6 = 9 dmg
Mana Regen: 50%
Aquila + Wraith Band: 1470g (485g+985g)
Int: 6 (3+3) = 72 mana + 0.24 mana regen
Str: 6 (3+3) = 120 hp and 0.18 hp regen
Agi: 15 (6+9) = 15 damage, 15 att. speed and 2.14 armor
Dmg: 13 (10+3) + 15 = 28 dmg
Armor: 2 + 2.14 = 4.14 armor
Flat Mana Regen: 0.55 + 0.24 = 0.79 mana regen
You basically get 3 more int, same amount of str, 9 more agi, 19 more dmg, 9 more att. speed and 3.28 more armor if you buy Aquila + Wraith rather than Drums. And it costs 185g less.
I would say Agi heroes should go for Aquila and Wraith band if you want to be cost efficient for your early game. Drums is certainly more valuable if you're going for early game 5-man pushes because of its active buff. Dragon Lance, on the other hand, is core on most ranged agi heroes (also meepo) so I would advice to rush Lance to maximize its stats and added attack range rather than going Wraith + Aquilla if you're having a hard lane. HoTD is now very optional since the stats are basically garbage but its still a worthful pick-up if you want the active.
Drum of Endurance is just an expensive ineffective aquila. Its worth it for the active buff and it synergizes with manta carriers (except AM) but its unproductive for stats. You basically get more stats with a Ring of Aquila + Wraithband.
Drum of Endurance: 1655g
Int: 3 = 36 mana and 0.12 mana regen
Str: 6 = 120 hp and 0.18 hp regen
Agi: 6 = 6 dmg, 0.86 armor and 6 att. speed
Dmg: 3 + 6 = 9 dmg
Mana Regen: 50%
Aquila + Wraith Band: 1470g (485g+985g)
Int: 6 (3+3) = 72 mana + 0.24 mana regen
Str: 6 (3+3) = 120 hp and 0.18 hp regen
Agi: 15 (6+9) = 15 damage, 15 att. speed and 2.14 armor
Dmg: 13 (10+3) + 15 = 28 dmg
Armor: 2 + 2.14 = 4.14 armor
Flat Mana Regen: 0.55 + 0.24 = 0.79 mana regen
You basically get 3 more int, same amount of str, 9 more agi, 19 more dmg, 9 more att. speed and 3.28 more armor if you buy Aquila + Wraith rather than Drums. And it costs 185g less.
I would say Agi heroes should go for Aquila and Wraith band if you want to be cost efficient for your early game. Drums is certainly more valuable if you're going for early game 5-man pushes because of its active buff. Dragon Lance, on the other hand, is core on most ranged agi heroes (also meepo) so I would advice to rush Lance to maximize its stats and added attack range rather than going Wraith + Aquilla if you're having a hard lane. HoTD is now very optional since the stats are basically garbage but its still a worthful pick-up if you want the active.