Who's running an AGM battery in a weekend driver?

I have a redtop in my "impossible to get at the battery" car. Six years old, going strong. I have another for utility use, that's ten. When I need to replace the one in this car, it gets another redtop.
On the other hand, my interstates are way less that half the cost of a red top. If they last half as long, I'm ahead.