SB, if you're not entering NASCAR why worry that much about the HP? Between the two, I'd examine price and trade-in value, but I'd go with the Camry.
I only lease, so trade-in doesn't matter, and the monthly payments and terms are virtually identical. As for the horsepower, my commute to the office is mostly uphill. The Camry, being less powerful, might get annoying after a while.
