Hi Netty
Obviously I cant give any tips about driving US vans, but over here I definitely find driving a van more comfortable and reassuring. Being seated higher up from the road gives you a better perspective of the road ahead I feel. It is easier to anticipate any problems as you can usually see them before they happen.
The only negative I can think of is that it is probably easier to stop a car in an emergency - the extra weight of a van will most likely increase the stopping distance. Just remember to take that into consideration, and you will find that the benefits far outweigh any slight negatives (imo)