That itemization problem starts in the mid 20's IMO. On my wizard, all of the drops are like level 18 yet I am level 32, and on my monk who is 26, all of the drops are still <=18 in level. Wizard is in difficulty after normal, I think NM while monk is still in normal entering act 3....
I did find my first legendary on my monk though at level 18. I found a head slot item called something like "see no evil". Although stat wise its getting old pretty fast...
I wouldn't know. My friends give me rares that they don't need anymore after they upgrade. Then I continually train my forge to forge rare items or search the market. After a while you will see drops, that's why they are called "rare." Keep playing.