Missing words: had, would

Here's another dropped sound: 'd. 

"I'd better go."  "He'd better go."  "I'd rather go."  These sentences may be rendered with fewer sounds in quick speech:  "I better go,"  "He better go."   Of course, they should be "I had better go."  "He had better go." and "I would rather go."

And in the last case the ellision results in a new word: "I druther go." and 'If I have my druthers, ..."