My only addition to this bucket truck dilema is to make sure you get atleast 40' working height.
I have made the mistake of buying a van with a 33' bucket and it just wasn't tall enough to get where I needed to go on almost every job i took it to.
Also, I would shy away from a van mounted bucket. The main support mast goes right up through the center of the van in the most inconvenient place. It makes getting anything out of the side of the truck almost impossible.
Mine had a lazy susan around it which just meant that the area behind the driver became a catch all for everything since you couldn't really get back there to clean it out or retrieve anything easily.
