Dude dont be more confused!get a Camry or avalon both 2003 are available in less than 38,000 in their best condition, for Best Economy and Power at the same time.
For a 3 to 4 yrs used car all that you have to consider is its technical Support/Maint...cost,which is very very expensive for all other cars even for ordinary brands.
It is my personal Experience coz we have Merce s320,Sel 300e230,e220, Hayundai sonata, Nissan sunny,Suzki Swift,camry and an avalon in my family Avalone is Great.