Then you came to the wrong place. All "what car should I buy" threads on the Internet are just like this one.
Pick up a copy of the Consumer Reports annual auto issue, go to their website and get a subscription, or check out TrueDelta.com. All the info you need on used cars is there. It's well worth paying for a CR subscription considering the amount of money you're going to be spending. Toyota and Lexus are the reliability leaders, but there are other reliable cars that are a better value because they don't have the same perceived level of reliability.