well don't be too picky, just look for a good deal on a clean solid car that somebody took care of, make sure to look at the tires, brakes etc. look for leaks of any kind or odd noises
1996 to 1998 ford taurus/mercury sable is a good starting point, lots of them around, a good value in the used car market , don't buy a older one with the 3.8 v6 engine