The Voice of Reason: The Keen shoes are so comfortable and would be so good for your feet.
The Voice of Conscience: Ohmmmmm. Simplify your life. It's best to have fewer things, but things that are comfortable and useable.
The Voice of Practicality: The green shoes would be so useful in the life you actually lead - you could wear them nearly everyday and give lots of other pairs of shoes to the Goodwill.
The Voice of Binky: Buy the pointy purple ones with sequins! Sequins! Pointy! Purple!