Sears DieHard Platinums use to be made by Odyssey. They lasted a full 7 years on my 2004.5 dually. Based on their reputation and previous experience,I replaced them with 2 by Odyssey and will see how this particular version holds up. There are different versions of AGM. Odyssey, Optima and Northstar. Then the rest.

They are higher than your limit, but I've found that sometimes it's cheaper in the long run. I got mine at 20% off from Autozone ship to home. But their current discount code excludes batteries. (Maybe I revealed the loophole last year. )

Odyssey 65 series