Couple things you will run into is the need will be sooner to replace the wear out parts on the car. It's not much to be concerned about in a Toyota and Honda, but the Kia is sometimes a coin flip. By 2009, they really have gotten better on their vehicles in terms of reliability, better initial manufactured parts, and overall more intuitive design.
My only caution I give to anyone looking at a minivan more than 5 years old with over 100K on it...any brand...you have to remember what this was purchased for. It is a people mover...a little people mover. Children can be quite rough on any car, but moreso it seems on the ultimate in convenience. Sometimes they are immaculate and sometimes they look worse than a contractor's van. Use judgement, but if the price is right, the features are what you wanted, and the color is exactly what you guys like...then go put your hands on it and test drive it. Bring your kids, stroller, car seats, etc...and fully test it like you would drive it everyday. Do a routine park and get everyone out and then do it with everyone getting back in.
Good luck! Car shopping can be fun if you let it...