The Greatest powers on Middle Earth (3rd age)... Listed in order

[Iarhen]

I dont understand why would you place Saruman above Galadriel. Even though Saruman was a maia, his power was greatly diminished after he was corrupted by his desire of the One Ring (and the control over him that Sauron had). Saruman had his will taken captive when he dared to look in the palantir to spy Sauron. Galadriel does the same thing, without the palantir, and not only does her will overcomes Sauron's struggle for control, but also she has the power to see what the Dark Lord thinks!

And even though I still think that Galadriel and Gandalf are in the same place in terms of power (even though, again, hes a maia, but remember that his power was limited by the Valar because they were forbidden to match Sauron's power with power), I think my list would be like this:

1. Sauron
2. Gandalf/Galadriel/Bombadil
3. The Balrog/Saruman
4. Elrond/Cirdan/Celeborn/Radagast
5. Glorfindel
6. Smaug
7. Treebeard
8. Witch King of Angmar/Arwen
9. Aragorn
10.The other 8 Nazgul/Shelob