Thinking of buying a 2005 Subaru sedan

2005 Is a goofy "mongrel" year in that although the chassis and body are all new, the motor and funky exhaust are holdovers from the 2000-2004 era except for the use of FIVE O2 sensors! 2006 saw the onset of a simpler, better motor and exhaust/emissions pkg. IOW getting proper diagnoses and parts for 2005 can be difficult. I'd hold out for an '06-'09 if all else is similar value.