What Should I look for??

IM looking to find a reliable, low-mid maintenance v6 sedan for about $4k-$5k.. i was wondering what makes are good to look at? i was told volvo, lincoln, and other foreign cars other than honda and toyota were high maintenance but im not sure? what should i be looking for? I was told to stay away from pontiac, and chrysler..Here are a few i've looked @...: mitsubishi diamante/ galant, chevy monte carlo/ impala, nissan altima, and buick regal...ive also seen cars that were priced noticabley low for there make, model and year... should i stay away from those?