So, the Forester (2006 xt) is fixed and back on the road.
A new battery (I tried Bosch this time) was $140. I could have brought the duralast POS back to Autozone, as it was still under warranty, but there was no way I was going to give durlast another chance to do even more damage to my car.
The new battery cable was $70, and the new terminal was another $15. (the battery ATE the positive cable, it spewed out so much acid, never seen the like in all my life).
Replacing the cable was a pain, I had to pull the intercooler off the motor to get to the terminals, and routing the cables was a hassle.
Then I had to clean the acid off of the tray, the tray tie downs, everything around the battery in the engine compartment, take the battery hold down cross bar, clean the acid off of that, clean the rust off, prime it and repaint it.
The only sealed battery you can by in california is apparently Optima, and well, they're garbage (I bought one once, used the warranty 3 times in one week, then said screw it and went to something else).
I also noticed that none of the name brands I'm used to could be found in my area. I don't know if that's because of some stupid cali law, or some other reason. But hopefully the Bosch will work (Sears didn't have any diehards at the local Sears for my car when I checked on line, which was strange).
So, the duralast is offically the most expensive battery I've ever had for my car, as it cost me $100 in repairs, a weeks downtime, while I waited for parts, and a lot of freaking work out in the cold.
So yeah, don't buy Duralast, they're freaking acid generators. Never saw so much acid build up on a battery in my entire life.
Next is to replace the headlight housings and then the shocks/struts as well as change the oil in the rear end. Hopefully it will then last for another 10 years.