If I'm pondering an EU read, I go to Wookiepedia and look under the characters portion of the title. If Padme exists at all in the world of the novel, I pass. Irrational maybe, but I dislike the character that much.
I'm that way in regards toward the Fett clones. If I can mentally retcon them into regular soldiers/non-Fett clones, though, I can make some stories featuring them work.