Determining iOS Hardware / Device

I am currently working on my second iOS game in which I am creating dynamic Open GL ES reflections, and noticed on the older devices it would cause a drop in frames per second. It doesn't on the iPad 2, I do not have iPhone 4S yet, but I assume it won't have a visible effect there either with the new CPU.

So to not diminish the user experience I decided to remove those reflections, on the interactive CCSprite, on the older devices.

I went searching and found : UIDeviceHardware - Determine iOS device being used

I ended up just using: (platformString wasn't useful to me) I then just created a convenience method for myself to check for the version that have the Dual-core Apple A5 processor.