I am looking at mini-vans as a used vehicle. My needs are: $4000-$5000/ dependable / presentable for business / 4-7 passenger/working A/C is a must. Concentrating on the Sienna, but alternatives might be Mazda MPV, maybe Odyssey, but I worry about transmission problems. I am suspicious of Chryslers in this price range from a reliability standpoint, don't know much about GM or Ford minivans. It looks to me like the pricing in Ohio will put me in this age/mileage bracket for the Japanese brands with anywhere from 120k -180k mileage. I will have an appropriate brand specialist mechanic check it out before buying. I am asking for any red flags, problem areas to watch for, and recommendations that you all can provide. Thanks in advance. If I can make 2011 a good year, I'll be looking for one with half the mileage next year.