I'm looking to buy a used 2007/2008 Nissan Altima Sedan, and am split whether I should go for the fuel economy of the 2.5, 4 cyl engine (26 cty /34 hwy) or the power of the 3.5 V6 (20 cty /28 hwy)? I can get all the options I want (heated leather, sunroof, etc) with the 2.5 model, but electronic stability is only offered in the V6 models. Also, the 2.5's are much more plentiful and cost less...the V6, pretty rare and a little more expensive. I've been trying to weigh the pros and cons... just looking for some outside, third party opinions. Thanks!