I think that underestimates the contribution of the hybrid technology while contradicting the argument of comparing EPA ratings between vehicles. One person's driving style should be calculated as a ratio to the official rating, then using that same ratio to forecast how they will do on another vehicle, be it a hybrid or not. Hybrids will save people fuel without the need for recruitment into obsessive behaviour.

My fuel tracking shows that I'm aligned with the official EPA rating, and that is with chiefly city driving, normal climate control, and being conscientious about safety and motor traffic law. I don't have to be off-putting to passengers, making them suffer indignities like a sweltering harsh ride and a jerky power-and-glide cycle.

For the original poster: I would think that the Altima is a nicer overall vehicle; It's certainly a popular mid-size car, but the hybrid version doesn't have much market penetration, so few mechanics will have experience with them. If you want to worry less, your better bet is the Prius.