When you keep your cars as long as I do, the amortized annual difference between new and used is minimal. I've had good luck with used cars, but all but one were from known sources (family) who I knew to be conservative drivers who keep up on oil changes, etc.
Corollary rules: never buy a used car from someone who meets you and says "dude" or refers to anything as "sick" unless refer to a living creature with an illness.