Of course I think my street is the best street in Kirkwood! I am generally attracted to the streets that aren't usual cut-throughs for cars, like the north side of Clifton, the dead end section of Branham, the northernest part of Warren or Locust.
Howard Street is chock full of large, victorian style homes, some of which are on the historic registry. It's a very desirable street in Kirkwood.
It all depends on what you like! The streets bordering Bessie Branham Park provide a variety of activity for you to watch from your front porch. Rocky Ford and Delano are main thoroughfares cutting through Kirkwood: "from there you can get to anywhere." Do you want to be close to Downtown Kirkwood? Do you want to be close to paths for walking and bicycling? Do you want to be close to the school? Why not live right on Kirkwood Road in Kirkwood?
Think about what kind of environment you'd like surrounding your home, and Kirkwood has a street just perfect for you!