I don't blame you, RockHam, for being paranoid about the leather. Hey, all of us that have leather seats paid good, hard-earned money for it, and unless we don't take care of it (you certainly do, as do I), there is no reason to expect the leather to have any issues. In fact, just the opposite is true. That is, the leather must have no issues!
So far, the leather seats in our 2013 XLE V6 fine. In reality, the back seats hardly get used, so of course they are just about perfect. But, we always use the Camry whenever my wife and I go someplace, and thus both front seats are being used.
We've had leather seats in all of our cars sine 1988. Started with a 1988 Honda Accord, then a 1992 Jeep Cherokee, a 1996 Camry V6 XLE, a 2001 BMW 525i, a 2005 Mercedes Benz CLK320 (still have it), and most recently, the 2013 Camry. We have never had any issues with our leather seats except for some "stains" on the ones in the BMW. I suspect that is something I did. I do use Armour Leather Cleaner every other time I clean any of our cars (when the weather is nice), and I'm hoping that is one reason why we have no issues. (I also use it on our leather furniture (couch, matching chair, and computer desk chair, and they seem fine)).
As far as "higher end" vehicles (Lexus, ?Avalon?, etc.), based on my experiences with the CLK320 and 525i, and the "lower" end Camrys and Accord, I don't see any differences.
That Voodoo cleaner, though, looks interesting. I might start using it. But, for now, I think I'll stick with the stuff from Armour All.
