How do you figure out what new phone to get?

Just spent almost two hours on the phone with my mom trying to help her decide what new cell phone to get. She had made up her mind before I called and I had made up my mind which one I wanted in July. Now after 2 hours we are both flustered and more confused (if possible) than before. Oh I love my mom and our baffling decisions that we can't quite commit to.