What qualifies as "best"?
If thrill is the reason you play this game then I have what I consider to be one of the best items in the game to generate that emotion in other players.
Those who know know:
Rare spiderthread padded robe
Level Req: 55
Physical Defense: 0 to 36
Magical Defense: 33 to 84
+1367 Max Life
+1 to 16 Life per Kill
If gaining guild points at the expense of others while you sleep, play other games, smoke, etc. is your goal then I believe this to be top tier item on warlock or monk as well:
Mystical steelwood staff
Level Req: 45
Damage: 57 to 153
+38 Vitality
+5% Critical Flux
+54% Heal Mastery
How about leveling from 55-70 in 37 days instead of 36.5? This item is for you:
Rare ultimanium dagger
Level Req: 55
Damage: 92 to 162
+47 Max Mana
+14 Jubilance
Finally if you're in a guild that is real this axe could definitely be one of the best for you eventually:
Godly steel axe
Level Req: 10
Damage: 45 to 54
+20% Enhanced Effect
+25 Strength
+12 Dexterity
+6 Intelligence
+28 Max Mana
+3% Experience Gained
+2% Parry
+1% Glancing Blow
Why bother shrining or waiting forever to heal with this self found bad boy that i use:
Magical ultimanium plate mail
Level Req: 55
Physical Defense: 43 to 131
Magical Defense: 0 to 14
+25 Life Regen