Tough choice. These days, depending where you live, neither is a fantastic deal.
Concentrate on buying assets - things and situations that make you money. Try not to buy things that seem like assets but are liabilities. If you are set on a car, buy a 2-3 yr old used car where the liability (the depreciation) is low. If you are set on a house, get a loan where you aren't just paying interest, and if you can get a renter, all the better.