Hargrove, your best bet is go to new car dealerships like BMW, Acura, Mercedes, Lexus, whatever and test drive the many used cars they have. You'll find a huge selection of nice vehicles and they're plenty happy to let you run them around.
Here's some good websites for research:
edmunds.com and kbb.com have nice resources also, and you can do sortable side-by-side comparisons between vehicles that give you all the data about headroom, trunk space, all the data.
For reliability stats, Consumer Reports is the bible, it will cost you about $30 for a one-year online subscription but well worth the money.