Die hard platinums are gel cell
Sue,
The size difference he was probably talking about is common. Most toyotas take a group 24f battery. A group 35 is the same height and terminal configuration but length wise it is about 2 inches shorter. Any battery hold down made for one will work with the other. If you wait until Monday I'll confirm the fit at work.
As far as quality control I know die hard was made in mexico by JCI for a while and towards the beginning of this year we saw a lot of problems with batteries coming in over filled so they would leak a small amount during the first charge. Other than that the only other quality control issues we see often are with dual post batteries (top and side post) the gel cells the side terminals work lose and you lose connection unless you take the top off and retighten it. The acid batteries with dual posts Labeled SUV batteries we are seeing come in after 18-30 months dead as a doornail. They happily discontinued those batteries last year and the old ones that are dying usually are fully warrantied out. The other is with vented batteries like in vws and other European cars. They just have a tendency to die within a year or two they are replaced under full warranty often as well.
After those problems we switched to a new manufacturer in Pennsylvania affiliated with Deka. So far so good. The new manuf. Batteries are easily identified by an animated logo on them as opposed to just a solid color.
Keep in mind this stuff applies to northern batteries and may be different than the batteries you would get which are designed for the warmer weather of the south.