Like I said, my commute goes from 3,500+ feet to sea level in ~60 miles, it has some grades. My "fun drive" starts at 3,500+ and goes up to 8,000+ feet in about 35 miles.
Yeah, I downshift, but I also want some margin so I don't detonate one my hypereutectic pistons. Doesn't matter if it makes more power if it's busted all the time