Who would be most powerful with the one ring?

[lord of dor-lomin]

It's great that you guys like Galadriel and all, but an elf, man, or dwarf is no match for a Maia. In a physical battle the lines are more blurred (eg Glorfindel & Ecthelion killed balrogs), but when it comes to sheer power of spirit, elves and men were not as great (except maybe Feanor, and Luthien too- but she was part Maia).

However, I completely agree with eleanor_niphredil, and believe that it wouldn't really matter who took the ring. They'd eventually be overcome by Sauron. They could perhaps destroy his armies and all using the ring, but as long as they don't destroy the ring itself, Sauron would live on, and they'd eventually bend to his will.