Well, you use insight for the mana and not for the damage. If you can do without the meditation aura then a savage polearm is better.
Edit: This was the first one I made. no idea when and where.
Insight
Poleaxe
'RalTirTalSol'
Two-Hand Damage: 64 to 120
Durability: 54 of 65
Required Strength: 62
Required Level: 27
Polearm Class - Slow Attack Speed
Item Version: 1.10+ Expansion
Item Level: 46
Fingerprint: 0xcecde5ac
+5 to Strength
+5 to Energy
+5 to Dexterity
+5 to Vitality
+210% Enhanced Damage
+9 to Minimum Damage
Adds 5-30 fire damage
+75 poison damage over 5 seconds
23% Better Chance of Getting Magic Items
+3 to Critical Strike
35% Faster Cast Rate
198% Bonus to Attack Rating
+2 to Mana After Each Kill
Level 15 Meditation Aura When Equipped
Socketed (4: 4 used)